diff --git a/create-table.sql b/create-table.sql
index a1abce0..bc60306 100644
--- a/create-table.sql
+++ b/create-table.sql
@@ -33,4 +33,13 @@ CREATE TABLE "copied" (
   "fileid"  TEXT
 );
 
-CREATE INDEX "copied_taskid" ON "copied" ("taskid");
\ No newline at end of file
+CREATE INDEX "copied_taskid" ON "copied" ("taskid");
+
+CREATE TABLE "bookmark" (
+  "alias"  TEXT,
+  "target"  TEXT
+);
+
+CREATE UNIQUE INDEX "bookmark_alias" ON "bookmark" (
+  "alias"
+);
diff --git a/db.js b/db.js
index fc57951..7b82b80 100644
--- a/db.js
+++ b/db.js
@@ -2,12 +2,11 @@ const path = require('path')
 const db_location = path.join(__dirname, 'gdurl.sqlite')
 const db = require('better-sqlite3')(db_location)
 
-module.exports = { db }
+db.pragma('journal_mode = WAL')
 
 create_table_copied()
 function create_table_copied () {
   const [exists] = db.prepare('PRAGMA table_info(copied)').all()
-  // console.log('exists', exists)
   if (exists) return
   const create_table = `CREATE TABLE "copied" (
   "taskid"  INTEGER,
@@ -16,4 +15,21 @@ function create_table_copied () {
   db.prepare(create_table).run()
   const create_index = `CREATE INDEX "copied_taskid" ON "copied" ("taskid");`
   db.prepare(create_index).run()
-}
\ No newline at end of file
+}
+
+create_table_bookmark()
+function create_table_bookmark () {
+  const [exists] = db.prepare('PRAGMA table_info(bookmark)').all()
+  if (exists) return
+  const create_table = `CREATE TABLE "bookmark" (
+  "alias"  TEXT,
+  "target"  TEXT
+);`
+  db.prepare(create_table).run()
+  const create_index = `CREATE UNIQUE INDEX "bookmark_alias" ON "bookmark" (
+  "alias"
+);`
+  db.prepare(create_index).run()
+}
+
+module.exports = { db }
\ No newline at end of file
diff --git a/src/gd.js b/src/gd.js
index 5300083..03175a2 100644
--- a/src/gd.js
+++ b/src/gd.js
@@ -97,7 +97,7 @@ async function count ({ fid, update, sort, type, output, not_teamdrive, service_
   if (!update) {
     const info = get_all_by_fid(fid)
     if (info) {
-      console.log('找到本地缓存数据，缓存时间：', dayjs(info.mtime).format('YYYY-MM-DD HH:mm:ss'))
+      console.log('找到本地快取資料，快取時間：', dayjs(info.mtime).format('YYYY-MM-DD HH:mm:ss'))
       const out_str = get_out_str({ info, type, sort })
       if (output) return fs.writeFileSync(output, out_str)
       return console.log(out_str)
@@ -165,7 +165,7 @@ async function walk_and_save ({ fid, not_teamdrive, update, service_account }) {
 
   const loop = setInterval(() => {
     const now = dayjs().format('HH:mm:ss')
-    const message = `${now} | 已获取对象 ${result.length} | 网络请求 进行中${limit.activeCount}/排队${limit.pendingCount}`
+    const message = `${now} | 已獲取對象 ${result.length} | 網路請求 進行中${limit.activeCount}/排隊中${limit.pendingCount}`
     print_progress(message)
   }, 1000)
 
@@ -196,8 +196,8 @@ async function walk_and_save ({ fid, not_teamdrive, update, service_account }) {
   } catch (e) {
     console.error(e)
   }
-  console.log('\n信息获取完毕')
-  not_finished.length ? console.log('未读取完毕的目录ID：', JSON.stringify(not_finished)) : console.log('所有目录读取完毕')
+  console.log('\n資訊獲取完畢')
+  not_finished.length ? console.log('未讀取完畢的目錄ID：', JSON.stringify(not_finished)) : console.log('所有目錄讀取完畢')
   clearInterval(loop)
   const smy = summary(result)
   db.prepare('UPDATE gd SET summary=?, mtime=? WHERE fid=?').run(JSON.stringify(smy), Date.now(), fid)
@@ -228,7 +228,8 @@ async function ls_folder ({ fid, not_teamdrive, service_account }) {
   params.orderBy = 'folder,name desc'
   params.fields = 'nextPageToken, files(id, name, mimeType, size, md5Checksum)'
   params.pageSize = Math.min(PAGE_SIZE, 1000)
-  const use_sa = (fid !== 'root') && (service_account || !not_teamdrive) // 不带参数默认使用sa
+  // const use_sa = (fid !== 'root') && (service_account || !not_teamdrive) // 不带参数默认使用sa
+  const use_sa = (fid !== 'root') && service_account
   const headers = await gen_headers(use_sa)
   do {
     if (pageToken) params.pageToken = pageToken
@@ -247,7 +248,7 @@ async function ls_folder ({ fid, not_teamdrive, service_account }) {
       }
     }
     if (!data) {
-      console.error('读取目录未完成(部分读取), 参数:', params)
+      console.error('讀取目錄未完成(部分讀取), 參數:', params)
       files.not_finished = true
       return files
     }
@@ -300,26 +301,17 @@ async function get_sa_token () {
       if (!SA_TOKENS.length) SA_TOKENS = get_sa_batch()
     }
   }
-  throw new Error('没有可用的SA帐号')
+  throw new Error('沒有可用的SA帳號')
 }
 
-function real_get_sa_token (el) {
+async function real_get_sa_token (el) {
   const { value, expires, gtoken } = el
   // 把gtoken传递出去的原因是当某账号流量用尽时可以依此过滤
   if (Date.now() < expires) return { access_token: value, gtoken }
-  return new Promise((resolve, reject) => {
-    gtoken.getToken((err, tokens) => {
-      if (err) {
-        reject(err)
-      } else {
-        // console.log('got sa token', tokens)
-        const { access_token, expires_in } = tokens
-        el.value = access_token
-        el.expires = Date.now() + 1000 * (expires_in - 60 * 5) // 提前5分钟判定为过期
-        resolve({ access_token, gtoken })
-      }
-    })
-  })
+  const { access_token, expires_in } = await gtoken.getToken({ forceRefresh: true })
+  el.value = access_token
+  el.expires = Date.now() + 1000 * (expires_in - 60 * 5) // 提前5分钟判定为过期
+  return { access_token, gtoken }
 }
 
 function get_random_element (arr) {
@@ -361,10 +353,10 @@ async function create_folder (name, parent, use_sa, limit) {
         if (limit) limit.clearQueue()
         throw new Error(FILE_EXCEED_MSG)
       }
-      console.log('创建目录重试中：', name, '重试次数：', retry)
+      console.log('創建目錄重試中：', name, '重試次數：', retry)
     }
   }
-  throw new Error(err_message + ' 目录名：' + name)
+  throw new Error(err_message + ' 目錄名：' + name)
 }
 
 async function get_name_by_id (fid) {
@@ -394,10 +386,10 @@ async function user_choose () {
   const answer = await prompts({
     type: 'select',
     name: 'value',
-    message: '检测到上次的复制记录，是否继续？',
+    message: '檢測到上次的複製紀錄，是否繼續？',
     choices: [
-      { title: 'Continue', description: '从上次中断的地方继续', value: 'continue' },
-      { title: 'Restart', description: '无视已存在的记录，重新复制', value: 'restart' },
+      { title: 'Continue', description: '從上次中斷的地方繼續', value: 'continue' },
+      { title: 'Restart', description: '無視已存在的紀錄，重新複製', value: 'restart' },
       { title: 'Exit', description: '直接退出', value: 'exit' }
     ],
     initial: 0
@@ -407,15 +399,15 @@ async function user_choose () {
 
 async function copy ({ source, target, name, min_size, update, not_teamdrive, service_account, dncnr, is_server }) {
   target = target || DEFAULT_TARGET
-  if (!target) throw new Error('目标位置不能为空')
+  if (!target) throw new Error('目標位置不能為空')
 
   const record = db.prepare('select id, status from task where source=? and target=?').get(source, target)
-  if (record && record.status === 'copying') return console.log('已有相同源和目的地的任务正在运行，强制退出')
+  if (record && record.status === 'copying') return console.log('已有相同來源和目的地的任務正在進行，強制退出')
 
   try {
     return await real_copy({ source, target, name, min_size, update, dncnr, not_teamdrive, service_account, is_server })
   } catch (err) {
-    console.error('复制文件夹出错', err)
+    console.error('複製資料夾出錯', err)
     const record = db.prepare('select id, status from task where source=? and target=?').get(source, target)
     if (record) db.prepare('update task set status=? where id=?').run('error', record.id)
   }
@@ -435,14 +427,14 @@ async function real_copy ({ source, target, name, min_size, update, dncnr, not_t
 
   const record = db.prepare('select * from task where source=? and target=?').get(source, target)
   if (record) {
+    const copied = db.prepare('select fileid from copied where taskid=?').all(record.id).map(v => v.fileid)
     const choice = is_server ? 'continue' : await user_choose()
     if (choice === 'exit') {
       return console.log('退出程序')
     } else if (choice === 'continue') {
-      let { copied, mapping } = record
-      const copied_ids = {}
+      let { mapping } = record
       const old_mapping = {}
-      copied = copied.trim().split('\n')
+      const copied_ids = {}
       copied.forEach(id => copied_ids[id] = true)
       mapping = mapping.trim().split('\n').map(line => line.split(' '))
       const root = mapping[0][1]
@@ -451,9 +443,9 @@ async function real_copy ({ source, target, name, min_size, update, dncnr, not_t
       const arr = await walk_and_save({ fid: source, update, not_teamdrive, service_account })
       let files = arr.filter(v => v.mimeType !== FOLDER_TYPE).filter(v => !copied_ids[v.id])
       if (min_size) files = files.filter(v => v.size >= min_size)
-      const folders = arr.filter(v => v.mimeType === FOLDER_TYPE).filter(v => !old_mapping[v.id])
-      console.log('待复制的目录数：', folders.length)
-      console.log('待复制的文件数：', files.length)
+      const folders = arr.filter(v => v.mimeType === FOLDER_TYPE)
+      console.log('待複製的目錄數：', folders.length)
+      console.log('待複製的檔案數：', files.length)
       const all_mapping = await create_folders({
         old_mapping,
         source,
@@ -468,14 +460,16 @@ async function real_copy ({ source, target, name, min_size, update, dncnr, not_t
     } else if (choice === 'restart') {
       const new_root = await get_new_root()
       const root_mapping = source + ' ' + new_root.id + '\n'
-      db.prepare('update task set status=?, copied=?, mapping=? where id=?')
-        .run('copying', '', root_mapping, record.id)
-      const arr = await walk_and_save({ fid: source, update: true, not_teamdrive, service_account })
+      db.prepare('update task set status=?, mapping=? where id=?').run('copying', root_mapping, record.id)
+      db.prepare('delete from copied where taskid=?').run(record.id)
+      // const arr = await walk_and_save({ fid: source, update: true, not_teamdrive, service_account })
+      const arr = await walk_and_save({ fid: source, update, not_teamdrive, service_account })
+
       let files = arr.filter(v => v.mimeType !== FOLDER_TYPE)
       if (min_size) files = files.filter(v => v.size >= min_size)
       const folders = arr.filter(v => v.mimeType === FOLDER_TYPE)
-      console.log('待复制的目录数：', folders.length)
-      console.log('待复制的文件数：', files.length)
+      console.log('待複製的目錄數：', folders.length)
+      console.log('待複製的檔案數：', files.length)
       const mapping = await create_folders({
         source,
         folders,
@@ -498,8 +492,8 @@ async function real_copy ({ source, target, name, min_size, update, dncnr, not_t
     let files = arr.filter(v => v.mimeType !== FOLDER_TYPE)
     if (min_size) files = files.filter(v => v.size >= min_size)
     const folders = arr.filter(v => v.mimeType === FOLDER_TYPE)
-    console.log('待复制的目录数：', folders.length)
-    console.log('待复制的文件数：', files.length)
+    console.log('待複製的目錄數：', folders.length)
+    console.log('待複製的檔案數：', files.length)
     const mapping = await create_folders({
       source,
       folders,
@@ -514,26 +508,26 @@ async function real_copy ({ source, target, name, min_size, update, dncnr, not_t
 }
 
 async function copy_files ({ files, mapping, service_account, root, task_id }) {
-  console.log('\n开始复制文件，总数：', files.length)
+  console.log('\n開始複製文件，總數：', files.length)
   const limit = pLimit(PARALLEL_LIMIT)
   let count = 0
   const loop = setInterval(() => {
     const now = dayjs().format('HH:mm:ss')
-    const message = `${now} | 已复制文件数 ${count} | 网络请求 进行中${limit.activeCount}/排队${limit.pendingCount}`
+    const message = `${now} | 已複製的檔案數 ${count} | 網路請求 進行中${limit.activeCount}/排隊中${limit.pendingCount}`
     print_progress(message)
   }, 1000)
   return Promise.all(files.map(async file => {
     const { id, parent } = file
     const target = mapping[parent] || root
-    const new_file = await limit(() => copy_file(id, target, service_account, limit))
+    const new_file = await limit(() => copy_file(id, target, service_account, limit, task_id))
     if (new_file) {
       count++
-      db.prepare('update task set status=?, copied = copied || ? where id=?').run('copying', id + '\n', task_id)
+      db.prepare('INSERT INTO copied (taskid, fileid) VALUES (?, ?)').run(task_id, id)
     }
   })).finally(() => clearInterval(loop))
 }
 
-async function copy_file (id, parent, use_sa, limit) {
+async function copy_file (id, parent, use_sa, limit, task_id) {
   let url = `https://www.googleapis.com/drive/v3/files/${id}/copy`
   let params = { supportsAllDrives: true }
   url += '?' + params_to_query(params)
@@ -558,21 +552,22 @@ async function copy_file (id, parent, use_sa, limit) {
       const message = data && data.error && data.error.message
       if (message && message.toLowerCase().includes('file limit')) {
         if (limit) limit.clearQueue()
-        throw new Error('您的团队盘文件数已超限，停止复制')
+        if (task_id) db.prepare('update task set status=? where id=?').run('error', task_id)
+        throw new Error('您的小組雲端硬碟文件數已超限，停止複製')
       }
-      if (message && message.toLowerCase().includes('rate limit')) {
+      if (use_sa && message && message.toLowerCase().includes('rate limit')) {
         SA_TOKENS = SA_TOKENS.filter(v => v.gtoken !== gtoken)
         if (!SA_TOKENS.length) SA_TOKENS = get_sa_batch()
-        console.log('此帐号触发使用限额，剩余可用service account帐号数量：', SA_TOKENS.length)
+        console.log('此帳號觸發使用限額，剩餘可用service account帳號數量：', SA_TOKENS.length)
       }
     }
   }
   if (use_sa && !SA_TOKENS.length) {
     if (limit) limit.clearQueue()
     if (task_id) db.prepare('update task set status=? where id=?').run('error', task_id)
-    throw new Error('所有SA帐号流量已用完')
+    throw new Error('所有SA帳號流量已用完')
   } else {
-    console.warn('复制文件失败，文件id: ' + id)
+    console.warn('複製檔案失敗，檔案id: ' + id)
   }
 }
 
@@ -582,19 +577,21 @@ async function create_folders ({ source, old_mapping, folders, root, task_id, se
   mapping[source] = root
   if (!folders.length) return mapping
 
-  console.log('开始复制文件夹，总数：', folders.length)
+  const missed_folders = folders.filter(v => !mapping[v.id])
+  console.log('開始複製資料夾，總數：', missed_folders.length)
   const limit = pLimit(PARALLEL_LIMIT)
   let count = 0
   let same_levels = folders.filter(v => v.parent === folders[0].parent)
 
   const loop = setInterval(() => {
     const now = dayjs().format('HH:mm:ss')
-    const message = `${now} | 已创建目录数 ${count} | 网络请求 进行中${limit.activeCount}/排队${limit.pendingCount}`
+    const message = `${now} | 已創建目錄 ${count} | 網路請求 進行中${limit.activeCount}/排隊中${limit.pendingCount}`
     print_progress(message)
   }, 1000)
 
   while (same_levels.length) {
-    await Promise.all(same_levels.map(async v => {
+    const same_levels_missed = same_levels.filter(v => !mapping[v.id])
+    await Promise.all(same_levels_missed.map(async v => {
       try {
         const { name, id, parent } = v
         const target = mapping[parent] || root
@@ -602,16 +599,16 @@ async function create_folders ({ source, old_mapping, folders, root, task_id, se
         count++
         mapping[id] = new_folder.id
         const mapping_record = id + ' ' + new_folder.id + '\n'
-        db.prepare('update task set status=?, mapping = mapping || ? where id=?').run('copying', mapping_record, task_id)
+        db.prepare('update task set mapping = mapping || ? where id=?').run(mapping_record, task_id)
       } catch (e) {
         if (e.message === FILE_EXCEED_MSG) {
           clearInterval(loop)
           throw new Error(FILE_EXCEED_MSG)
         }
-        console.error('创建目录出错:', e.message)
+        console.error('創建目錄出錯:', e.message)
       }
     }))
-    folders = folders.filter(v => !mapping[v.id])
+    // folders = folders.filter(v => !mapping[v.id])
     same_levels = [].concat(...same_levels.map(v => folders.filter(vv => vv.parent === v.id)))
   }
 
@@ -659,10 +656,10 @@ async function confirm_dedupe ({ file_number, folder_number }) {
   const answer = await prompts({
     type: 'select',
     name: 'value',
-    message: `检测到同位置下重复文件${file_number}个，重复空目录${folder_number}个，是否删除？`,
+    message: `檢測到同位置下重複文件${file_number}个，重複空目錄${folder_number}個，是否刪除？`,
     choices: [
-      { title: 'Yes', description: '确认删除', value: 'yes' },
-      { title: 'No', description: '先不删除', value: 'no' }
+      { title: 'Yes', description: '確認刪除', value: 'yes' },
+      { title: 'No', description: '先不刪除', value: 'no' }
     ],
     initial: 0
   })
@@ -687,7 +684,7 @@ async function rm_file ({ fid, service_account }) {
     } catch (err) {
       retry++
       handle_error(err)
-      console.log('删除重试中，重试次数', retry)
+      console.log('刪除重試中，重試次數', retry)
     }
   }
 }
@@ -697,7 +694,7 @@ async function dedupe ({ fid, update, service_account }) {
   if (!update) {
     const info = get_all_by_fid(fid)
     if (info) {
-      console.log('找到本地缓存数据，缓存时间：', dayjs(info.mtime).format('YYYY-MM-DD HH:mm:ss'))
+      console.log('找到本地快取資料，快取時間：', dayjs(info.mtime).format('YYYY-MM-DD HH:mm:ss'))
       arr = info
     }
   }
@@ -718,14 +715,14 @@ async function dedupe ({ fid, update, service_account }) {
     try {
       await limit(() => trash_file({ fid: v.id, service_account }))
       if (v.mimeType === FOLDER_TYPE) {
-        console.log('成功删除文件夹', v.name)
+        console.log('成功刪除資料夾', v.name)
         folder_count++
       } else {
-        console.log('成功删除文件', v.name)
+        console.log('成功刪除檔案', v.name)
         file_count++
       }
     } catch (e) {
-      console.log('删除失败', e.message)
+      console.log('刪除失敗', e.message)
     }
   }))
   return { file_count, folder_count }
@@ -743,7 +740,7 @@ function handle_error (err) {
 function print_progress (msg) {
   if (process.stdout.cursorTo) {
     process.stdout.cursorTo(0)
-    process.stdout.write(msg)
+    process.stdout.write(msg + ' ')
   } else {
     console.log(msg)
   }
diff --git a/src/router.js b/src/router.js
index 1612c8a..1cf3572 100644
--- a/src/router.js
+++ b/src/router.js
@@ -2,16 +2,17 @@ const Router = require('@koa/router')
 
 const { db } = require('../db')
 const { validate_fid, gen_count_body } = require('./gd')
-const { send_count, send_help, send_choice, send_task_info, sm, extract_fid, extract_from_text, reply_cb_query, tg_copy, send_all_tasks } = require('./tg')
+const { send_count, send_help, send_choice, send_task_info, sm, extract_fid, extract_from_text, reply_cb_query, tg_copy, send_all_tasks, send_bm_help, get_target_by_alias, send_all_bookmarks, set_bookmark, unset_bookmark } = require('./tg')
 
-const { AUTH, ROUTER_PASSKEY, TG_IPLIST, COPY_TARGET2, COPY_TARGET3 } = require('../config')
+const { AUTH, ROUTER_PASSKEY, TG_IPLIST } = require('../config')
 const { tg_whitelist } = AUTH
 
+const COPYING_FIDS = {}
 const counting = {}
 const router = new Router()
 
 router.get('/api/gdurl/count', async ctx => {
-  if (!ROUTER_PASSKEY) return ctx.body = 'gd-utils 成功啟動'
+  if (!ROUTER_PASSKEY) return ctx.body = 'gd-utils-cht 成功啟動'
   const { query, headers } = ctx.request
   let { fid, type, update, passkey } = query
   if (passkey !== ROUTER_PASSKEY) return ctx.body = 'invalid passkey'
@@ -50,7 +51,7 @@ router.post('/api/gdurl/tgbot', async ctx => {
   if (callback_query) {
     const { id, data } = callback_query
     const chat_id = callback_query.from.id
-    const [action, fid] = data.split(' ')
+    const [action, fid, target] = data.split(' ')
     if (action === 'count') {
       if (counting[fid]) return sm({ chat_id, text: fid + ' 正在統計，請稍候' })
       counting[fid] = true
@@ -61,19 +62,11 @@ router.post('/api/gdurl/tgbot', async ctx => {
         delete counting[fid]
       })
     } else if (action === 'copy') {
-      tg_copy({ fid, chat_id }).then(task_id => {
+      if (COPYING_FIDS[fid]) return sm({ chat_id, text: `正在處理 ${fid} 的複製命令` })
+      COPYING_FIDS[fid] = true
+      tg_copy({ fid, target: get_target_by_alias(target), chat_id }).then(task_id => {
         task_id && sm({ chat_id, text: `開始複製，任務ID: ${task_id} 可輸入 /task ${task_id} 查詢進度` })
-      })
-    } else if (action === 'copy2') {
-      const target = COPY_TARGET2
-      tg_copy({ fid, target, chat_id }).then(task_id => {
-        task_id && sm({ chat_id, text: `開始複製，任務ID: ${task_id} 可輸入 /task ${task_id} 查詢進度` })
-      })
-    } else if (action === 'copy3') {
-      const target = COPY_TARGET3
-      tg_copy({ fid, target, chat_id }).then(task_id => {
-        task_id && sm({ chat_id, text: `開始複製，任務ID: ${task_id} 可輸入 /task ${task_id} 查詢進度` })
-      })
+      }).finally(() => COPYING_FIDS[fid] = false)
     }
     return reply_cb_query({ id, data }).catch(console.error)
   }
@@ -90,12 +83,26 @@ router.post('/api/gdurl/tgbot', async ctx => {
   })) return console.warn('異常請求')
 
   const fid = extract_fid(text) || extract_from_text(text)
-  const no_fid_commands = ['/task', '/help']
+  const no_fid_commands = ['/task', '/help', '/bm']
   if (!no_fid_commands.some(cmd => text.startsWith(cmd)) && !validate_fid(fid)) {
     return sm({ chat_id, text: '未辨識到分享ID' })
   }
   if (text.startsWith('/help')) return send_help(chat_id)
-  if (text.startsWith('/count')) {
+  if (text.startsWith('/bm')) {
+    const [cmd, action, alias, target] = text.split(' ').map(v => v.trim())
+    if (!action) return send_all_bookmarks(chat_id)
+    if (action === 'set') {
+      if (!alias || !target) return sm({ chat_id, text: '標籤名和dstID不能為空' })
+      if (alias.length > 24) return sm({ chat_id, text: '標籤名請勿超過24个英文字符' })
+      if (!validate_fid(target)) return sm({ chat_id, text: 'dstID格式錯誤' })
+      set_bookmark({ chat_id, alias, target })
+    } else if (action === 'unset') {
+      if (!alias) return sm({ chat_id, text: '標籤名不能為空' })
+      unset_bookmark({ chat_id, alias })
+    } else {
+      send_bm_help(chat_id)
+    }
+  } else if (text.startsWith('/count')) {
     if (counting[fid]) return sm({ chat_id, text: fid + ' 正在統計，請稍候' })
     try {
       counting[fid] = true
@@ -108,7 +115,8 @@ router.post('/api/gdurl/tgbot', async ctx => {
       delete counting[fid]
     }
   } else if (text.startsWith('/copy')) {
-    const target = text.replace('/copy', '').replace(' -u', '').trim().split(' ').map(v => v.trim())[1]
+    let target = text.replace('/copy', '').replace(' -u', '').trim().split(' ').map(v => v.trim())[1]
+    target = get_target_by_alias(target) || target
     if (target && !validate_fid(target)) return sm({ chat_id, text: `目標ID ${target} 格式不正確` })
     const update = text.endsWith(' -u')
     tg_copy({ fid, target, chat_id, update }).then(task_id => {
diff --git a/src/summary.js b/src/summary.js
index 644f244..4fa5819 100644
--- a/src/summary.js
+++ b/src/summary.js
@@ -26,7 +26,7 @@ function make_table ({ file_count, folder_count, total_size, details }) {
     return arr.map(content => ({ content, hAlign }))
   })
   const total_count = file_count + folder_count
-  const tails = ['总计', total_count, total_size].map(v => ({ content: colors.bold(v), hAlign }))
+  const tails = ['總計', total_count, total_size].map(v => ({ content: colors.bold(v), hAlign }))
   tb.push(headers, ...records)
   tb.push(tails)
   return tb.toString() + '\n'
diff --git a/src/tg.js b/src/tg.js
index d39019d..2e50d09 100644
--- a/src/tg.js
+++ b/src/tg.js
@@ -5,7 +5,7 @@ const HttpsProxyAgent = require('https-proxy-agent')
 
 const { db } = require('../db')
 const { gen_count_body, validate_fid, real_copy, get_name_by_id } = require('./gd')
-const { AUTH, DEFAULT_TARGET } = require('../config')
+const { AUTH, DEFAULT_TARGET, USE_PERSONAL_AUTH } = require('../config')
 const { tg_token } = AUTH
 const gen_link = (fid, text) => `<a href="https://drive.google.com/drive/folders/${fid}">${text || fid}</a>`
 
@@ -22,24 +22,75 @@ async function get_folder_name (fid) {
   return FID_TO_NAME[fid] = name
 }
 
-module.exports = { send_count, send_help, sm, extract_fid, reply_cb_query, send_choice, send_task_info, send_all_tasks, tg_copy, extract_from_text }
-
 function send_help (chat_id) {
   const text = `<pre>[使用說明]
 ***不支持單檔分享***
 命令 ｜ 說明
-
+=====================
 /help | 返回本使用說明
-
-/count sourceID [-u] | 返回sourceID的文件統計資訊, sourceID可以是共享網址本身，也可以是共享ID。如果命令最后加上 -u，則無視快取記錄強制從線上獲取，適合一段時候後才更新完畢的分享連結。
-
-/copy sourceID targetID(選填) [-u] | 將sourceID的文件複製到targetID裡（會新建一個資料夾），若無targetID，則會複製到預設位置（config.js中的DEFAULT_TARGET）。如果命令最後加上 -u，則無視快取記錄強制從線上獲取源資料夾資訊。返回拷貝任務的taskID
-
-/task taskID(選填) | 返回對應任務的進度信息，若不填taskID則返回所有正在運行的任務進度，若填 all 則返回所有任務列表(歷史紀錄)
+=====================
+/count sourceID [-u] | 返回sourceID的文件統計資訊
+sourceID可以是共享網址本身，也可以是共享ID。如果命令最后加上 -u，則無視快取記錄強制從線上獲取，適合一段時候後才更新完畢的分享連結。
+=====================
+/copy sourceID targetID(選填) [-u] | 將sourceID的文件複製到targetID裡（會新建一個資料夾）
+若無targetID，則會複製到預設位置（config.js中的DEFAULT_TARGET）。
+如果設定了bookmark，那麼targetID也可以是bookmark的標籤名。
+如果命令最後加上 -u，則無視快取記錄強制從線上獲取源資料夾資訊。返回拷貝任務的taskID
+=====================
+/task taskID(選填) | 返回對應任務的進度信息，若不填taskID則返回所有正在運行的任務進度
+若填 all 則返回所有任務列表(歷史紀錄)
+=====================
+/bm [action] [alias] [target] | bookmark，添加常用目的資料夾ID
+會在輸入共享連結後返回的「文件統計」「開始複製」這兩個按鈕的下方出現，方便複製到常用位置。
+範例：
+/bm | 返回所有設定的資料夾
+/bm set movie folder-id | 將folder-id加入到收藏夾，標籤名設為movie
+/bm unset movie | 刪除此收藏夾
 </pre>`
   return sm({ chat_id, text, parse_mode: 'HTML' })
 }
 
+function send_bm_help (chat_id) {
+  const text = `<pre>/bm [action] [alias] [target] | bookmark，添加常用目的資料夾ID
+會在輸入共享連結後返回的「文件統計」「開始複製」這兩個按鈕的下方出現，方便複製到常用位置。
+範例：
+/bm | 返回所有設定的資料夾
+/bm set movie folder-id | 將folder-id加入到收藏夾，標籤名設為movie
+/bm unset movie | 刪除此收藏夾
+</pre>`
+  return sm({ chat_id, text, parse_mode: 'HTML' })
+}
+
+function send_all_bookmarks (chat_id) {
+  let records = db.prepare('select alias, target from bookmark').all()
+  if (!records.length) return sm({ chat_id, text: '資料庫中沒有收藏紀錄' })
+  const tb = new Table({ style: { head: [], border: [] } })
+  const headers = ['標籤名', 'dstID']
+  records = records.map(v => [v.alias, v.target])
+  tb.push(headers, ...records)
+  const text = tb.toString().replace(/─/g, '—')
+  return sm({ chat_id, text: `<pre>${text}</pre>`, parse_mode: 'HTML' })
+}
+
+function set_bookmark ({ chat_id, alias, target }) {
+  const record = db.prepare('select alias from bookmark where alias=?').get(alias)
+  if (record) return sm({ chat_id, text: '資料庫中已有同名的收藏' })
+  db.prepare('INSERT INTO bookmark (alias, target) VALUES (?, ?)').run(alias, target)
+  return sm({ chat_id, text: `成功設定收藏${alias} | ${target}` })
+}
+
+function unset_bookmark ({ chat_id, alias }) {
+  const record = db.prepare('select alias from bookmark where alias=?').get(alias)
+  if (!record) return sm({ chat_id, text: '未找到此標籤名的收藏' })
+  db.prepare('delete from bookmark where alias=?').run(alias)
+  return sm({ chat_id, text: '成功刪除收藏 ' + alias })
+}
+
+function get_target_by_alias (alias) {
+  const record = db.prepare('select target from bookmark where alias=?').get(alias)
+  return record && record.target
+}
+
 function send_choice ({ fid, chat_id }) {
   return sm({
     chat_id,
@@ -47,22 +98,27 @@ function send_choice ({ fid, chat_id }) {
     reply_markup: {
       inline_keyboard: [
         [
-          { text: '文件統計', callback_data: `count ${fid}` }
-        ],
-        [
-          { text: '開始複製(預設)', callback_data: `copy ${fid}` }
-        ],
-        [
-          { text: '開始複製(1)', callback_data: `copy2 ${fid}` }
-        ],
-        [
-          { text: '開始複製(2)', callback_data: `copy3 ${fid}` }
+          { text: '文件統計', callback_data: `count ${fid}` },
+          { text: '開始複製', callback_data: `copy ${fid}` }
         ]
-      ]
+      ].concat(gen_bookmark_choices(fid))
     }
   })
 }
 
+// console.log(gen_bookmark_choices())
+function gen_bookmark_choices (fid) {
+  const gen_choice = v => ({text: `複製到 ${v.alias}`, callback_data: `copy ${fid} ${v.alias}`})
+  const records = db.prepare('select * from bookmark').all()
+  const result = []
+  for (let i = 0; i < records.length; i += 2) {
+    const line = [gen_choice(records[i])]
+    if (records[i + 1]) line.push(gen_choice(records[i + 1]))
+    result.push(line)
+  }
+  return result
+}
+
 async function send_all_tasks (chat_id) {
   let records = db.prepare('select id, status, ctime from task').all()
   if (!records.length) return sm({ chat_id, text: '資料庫中沒有任務記錄' })
@@ -120,7 +176,7 @@ async function get_task_info (task_id) {
 }
 
 async function send_task_info ({ task_id, chat_id }) {
-  const { text, status, total_count } = await get_task_info(task_id)
+  const { text, status, folder_count } = await get_task_info(task_id)
   if (!text) return sm({ chat_id, text: '資料庫查無此任務ID：' + task_id })
   const url = `https://api.telegram.org/bot${tg_token}/sendMessage`
   let message_id
@@ -130,8 +186,8 @@ async function send_task_info ({ task_id, chat_id }) {
   } catch (e) {
     console.log('fail to send message to tg', e.message)
   }
-  // get_task_info 在task文件数超大时比较吃cpu，如果超5万就不每10秒更新了
-  if (!message_id || status !== 'copying' || total_count > 50000) return
+  // get_task_info 在task目录数超大时比较吃cpu，如果超1万就不每10秒更新了，以后如果把mapping 也另存一张表可以取消此限制
+  if (!message_id || status !== 'copying' || folder_count > 10000) return
   const loop = setInterval(async () => {
     const url = `https://api.telegram.org/bot${tg_token}/editMessageText`
     const { text, status } = await get_task_info(task_id)
@@ -150,31 +206,19 @@ async function tg_copy ({ fid, target, chat_id, update }) { // return task_id
   let record = db.prepare('select id, status from task where source=? and target=?').get(fid, target)
   if (record) {
     if (record.status === 'copying') {
-      sm({ chat_id, text: '已有相同源ID和目的ID的任務正在進行，查詢進度可輸入 /task ' + record.id })
+      sm({ chat_id, text: '已有相同來源ID和目的ID的任務正在進行，查詢進度可輸入 /task ' + record.id })
       return
     } else if (record.status === 'finished') {
       sm({ chat_id, text: `檢測到已存在的任務 ${record.id}，開始繼續拷貝` })
     }
   }
 
-  real_copy({ source: fid, update, target, not_teamdrive: true, service_account: true, is_server: true })
+  real_copy({ source: fid, update, target, service_account: !USE_PERSONAL_AUTH, is_server: true })
     .then(async info => {
       if (!record) record = {} // 防止无限循环
       if (!info) return
       const { task_id } = info
-      const row = db.prepare('select * from task where id=?').get(task_id)
-      const { source, target, status, copied, mapping, ctime, ftime } = row
-      const { summary } = db.prepare('select summary from gd where fid=?').get(source) || {}
-      const { file_count, folder_count, total_size } = summary ? JSON.parse(summary) : {}
-      const copied_files = copied ? copied.trim().split('\n').length : 0
-      const copied_folders = mapping ? (mapping.trim().split('\n').length - 1) : 0
-
-      let text = `任務 ${task_id} 完成\n`
-      const name = await get_folder_name(source)
-      text += '源資料夾：' + gen_link(source, name) + '\n'
-      text += '目錄完成數：' + copied_folders + '/' + folder_count + '\n'
-      text += '文件完成數：' + copied_files + '/' + file_count + '\n'
-      text += '合計大小：' + (total_size || '未知大小') + '\n'
+      const { text } = await get_task_info(task_id)
       sm({ chat_id, text, parse_mode: 'HTML' })
     })
     .catch(err => {
@@ -206,7 +250,8 @@ function reply_cb_query ({ id, data }) {
 }
 
 async function send_count ({ fid, chat_id, update }) {
-  const table = await gen_count_body({ fid, update, type: 'tg', service_account: true })
+  sm({ chat_id, text: `開始獲取 ${fid} 所有檔案資訊，請稍後，建議統計完成前先不要開始複製，因为複製也需要先獲取來源資料夾資訊` })
+  const table = await gen_count_body({ fid, update, type: 'tg', service_account: !USE_PERSONAL_AUTH })
   if (!table) return sm({ chat_id, parse_mode: 'HTML', text: gen_link(fid) + ' 資訊獲取失敗' })
   const url = `https://api.telegram.org/bot${tg_token}/sendMessage`
   const gd_link = `https://drive.google.com/drive/folders/${fid}`
@@ -222,7 +267,7 @@ ${table}</pre>`
     // const too_long_msgs = ['request entity too large', 'message is too long']
     // if (description && too_long_msgs.some(v => description.toLowerCase().includes(v))) {
     if (true) {
-      const smy = await gen_count_body({ fid, type: 'json', service_account: true })
+      const smy = await gen_count_body({ fid, type: 'json', service_account: !USE_PERSONAL_AUTH })
       const { file_count, folder_count, total_size } = JSON.parse(smy)
       return sm({
         chat_id,
@@ -256,7 +301,7 @@ function extract_fid (text) {
     if (!text.startsWith('http')) text = 'https://' + text
     const u = new URL(text)
     if (u.pathname.includes('/folders/')) {
-      const reg = /[^\/?]+$/
+      const reg = /[^/?]+$/
       const match = u.pathname.match(reg)
       return match && match[0]
     }
@@ -271,3 +316,5 @@ function extract_from_text (text) {
   const m = text.match(reg)
   return m && extract_fid(m[0])
 }
+
+module.exports = { send_count, send_help, sm, extract_fid, reply_cb_query, send_choice, send_task_info, send_all_tasks, tg_copy, extract_from_text, get_target_by_alias, send_bm_help, send_all_bookmarks, set_bookmark, unset_bookmark }