diff --git a/README.md b/README.md
index a3ca0a9..d4622dc 100644
--- a/README.md
+++ b/README.md
@@ -199,13 +199,8 @@ require'Trans'.setup {
         width = 37,
         height = 27,
         border = 'rounded',
-        title = {
-            { '', 'TransTitleRound' },
-            { ' Trans', 'TransTitle' },
-            { '', 'TransTitleRound' },
-        },
+        title = title,
         keymap = {
-            -- TODO :
             pageup = '[[',
             pagedown = ']]',
             pin = '<leader>[',
@@ -226,16 +221,13 @@ require'Trans'.setup {
             'BufLeave',
         },
         auto_play = true,
+        timeout = 3000,
     },
     float = {
         width = 0.8,
         height = 0.8,
         border = 'rounded',
-        title = {
-            { '', 'TransTitleRound' },
-            { ' Trans', 'TransTitle' },
-            { '', 'TransTitleRound' },
-        },
+        title = title,
         keymap = {
             quit = 'q',
         },
@@ -271,17 +263,28 @@ require'Trans'.setup {
         -- yes = '✔️',
         -- no = '❌'
     },
-    theme = 'default', -- 目前可选的: default, tokyonight, dracula
+    theme = 'default',
+    -- theme = 'dracula',
+    -- theme = 'tokyonight',
+
     db_path = '$HOME/.vim/dict/ultimate.db',
 
-    -- TODO  add online translate engine
-    -- online_search = {
-    --     enable = false,
-    --     engine = {},
+    engine = {
+        -- 目前支持hover窗口支持百度, 默认不开启
+        -- baidu = {
+        --     appid = '',
+        --     appPasswd = '',
+        -- },
+    },
+
+    -- TODO :
+    -- register word
+    -- history = {
+    --     -- TOOD
     -- }
 
-    -- TODO register word
-}
+    -- TODO :add online translate engine
+} 
 ```
 
 ## 快捷键绑定
@@ -342,6 +345,7 @@ vim.keymap.set('n', 'mi', '<Cmd>TranslateInput<CR>')
     },
 }
 ```
+
 ## 声明
 - 本插件词典基于[ECDICT](https://github.com/skywind3000/ECDICT)
 
diff --git a/lua/Trans/content.lua b/lua/Trans/content.lua
index 8852511..912589a 100644
--- a/lua/Trans/content.lua
+++ b/lua/Trans/content.lua
@@ -15,6 +15,7 @@ local content = {
         if not self.modifiable then
             error('content can not add newline now')
         end
+
         self.size = self.size + 1
         self.lines[self.size] = value
     end,
@@ -23,6 +24,7 @@ local content = {
         if not self.modifiable then
             error('content can not add newline now')
         end
+
         self.hl_size = self.hl_size + 1
         self.highlights[self.hl_size] = opt
     end,
@@ -32,6 +34,7 @@ local content = {
         clear(self.lines)
         clear(self.highlights)
         self.size = 0
+        self.hl_size = 0
     end,
 
     ---将内容连接上对应的窗口
@@ -42,6 +45,7 @@ local content = {
             return
         end
 
+        offset = offset or 0
         self.window:bufset('modifiable', true)
         local window = self.window
         --- NOTE : 使用-1 则需要按顺序设置
@@ -71,7 +75,6 @@ local content = {
         end
     end,
 
-
     format = function(self, ...)
         local nodes = { ... }
         local size = #nodes
@@ -85,10 +88,7 @@ local content = {
         end
 
         local space = math.floor(((self.window.width - width) / (size - 1)))
-        if space > 0 then
-            return
-        end
-
+        assert(space > 0, 'try to expand the window')
         local interval = (' '):rep(space)
         return setmetatable({
             text = table.concat(strs, interval),
diff --git a/lua/Trans/init.lua b/lua/Trans/init.lua
index 37d4828..03f582f 100644
--- a/lua/Trans/init.lua
+++ b/lua/Trans/init.lua
@@ -88,11 +88,11 @@ M.conf = {
     db_path = '$HOME/.vim/dict/ultimate.db',
 
     engine = {
-        baidu = {
-            appid = '',
-            appPasswd = '',
-        },
-        -- youdao = {
+        -- baidu = {
+        --     appid = '',
+        --     appPasswd = '',
+        -- },
+        -- -- youdao = {
         --     appkey = '',
         --     appPasswd = '',
         -- },
diff --git a/lua/Trans/query/baidu.lua b/lua/Trans/query/baidu.lua
index 0746ca0..61c5c8f 100644
--- a/lua/Trans/query/baidu.lua
+++ b/lua/Trans/query/baidu.lua
@@ -1,17 +1,14 @@
 local baidu     = require('Trans').conf.engine.baidu
 local appid     = baidu.appid
 local appPasswd = baidu.appPasswd
-local salt      = tostring(math.random(bit.rshift(1, 5)))
+local salt      = tostring(math.random(bit.lshift(1, 15)))
 local uri       = 'https://fanyi-api.baidu.com/api/trans/vip/translate'
 
 if appid == '' or appPasswd == '' then
     error('请查看README, 实现在线翻译或者设置将在线翻译设置为false')
 end
 
-local ok, curl = pcall(require, 'plenary.curl')
-if not ok then
-    error('plenary not found')
-end
+local post = require('Trans.util.curl').POST
 
 local function get_field(word)
     local to   = 'zh'
@@ -28,22 +25,40 @@ local function get_field(word)
     }
 end
 
+--- this is a nice plugin
+---返回一个channel
+---@param word string
+---@return function
 return function(word)
     local query = get_field(word)
-    local output = curl.post(uri, {
+    local result
+
+    post(uri, {
         data = query,
         headers = {
             content_type = "application/x-www-form-urlencoded",
-        }
+        },
+        callback = function(str)
+            if result then
+                return
+            elseif str ~= '' then
+                local res = vim.fn.json_decode(str)
+                if res and res.trans_result then
+                    result = {
+                        word = word,
+                        translation = res.trans_result[1].dst,
+                    }
+
+                else
+                    result = false
+                end
+            else
+                result = false
+            end
+        end,
     })
 
-    if output.exit == 0 and output.status == 200 then
-        local res = vim.fn.json_decode(output.body)
-        if res and res.trans_result then
-            return {
-                word = word,
-                translation = res.trans_result[1].dst,
-            }
-        end
+    return function()
+        return result
     end
 end
diff --git a/lua/Trans/translate.lua b/lua/Trans/translate.lua
index 94e5ee5..d37ba38 100644
--- a/lua/Trans/translate.lua
+++ b/lua/Trans/translate.lua
@@ -42,7 +42,7 @@ local function translate(mode, view)
     mode = mode or vim.api.nvim_get_mode().mode
     view = view or require('Trans').conf.view[mode]
     assert(mode and view)
-    local word = get_word(mode)
+    local word = get_word(mode):gsub('^%s+', '', 1)
     require('Trans.view.' .. view)(word)
 end
 
diff --git a/lua/Trans/util/curl.lua b/lua/Trans/util/curl.lua
new file mode 100644
index 0000000..a136328
--- /dev/null
+++ b/lua/Trans/util/curl.lua
@@ -0,0 +1,61 @@
+--- TODO :wrapper for curl
+local curl = {}
+-- local example = {
+--     data = {},
+--     headers = {
+--         k = 'v',
+--     },
+--     callback = function(output)
+
+--     end,
+-- }
+
+
+
+curl.GET = function(uri, opts)
+    --- TODO :
+end
+
+
+curl.POST = function(uri, opts)
+    vim.validate {
+        uri = { uri, 's' },
+        opts = { opts, 't' }
+    }
+
+    local cmd = { 'curl', '-s', uri }
+    local size = 3
+
+    local function insert(...)
+        for _, v in ipairs { ... } do
+            size = size + 1
+            cmd[size] = v
+        end
+    end
+
+    local s = '"%s=%s"'
+
+    if opts.headers then
+        for k, v in pairs(opts.headers) do
+            insert('-H', s:format(k, v))
+        end
+    end
+
+    for k, v in pairs(opts.data) do
+        insert('-d', s:format(k, v))
+    end
+
+    local option
+    if opts.callback then
+        option = {
+            on_stdout = function (_, output)
+                opts.callback(table.concat(output))
+            end,
+        }
+    end
+
+    vim.fn.jobstart(table.concat(cmd, ' '), option)
+end
+
+
+return curl
diff --git a/lua/Trans/view/float.lua b/lua/Trans/view/float.lua
index 1a03212..d687dd0 100644
--- a/lua/Trans/view/float.lua
+++ b/lua/Trans/view/float.lua
@@ -72,18 +72,18 @@ return function(word)
     m_result = require('Trans.query.' .. engine_us)(word)
 
     local opt = {
-        relative = 'editor',
-        width    = float.width,
-        height   = float.height,
-        border   = float.border,
-        title    = float.title,
-        row      = bit.rshift((vim.o.lines - float.height), 1),
-        col      = bit.rshift((vim.o.columns - float.width), 1),
-        zindex   = 50,
+        relative  = 'editor',
+        width     = float.width,
+        height    = float.height,
+        border    = float.border,
+        title     = float.title,
+        animation = float.animation,
+        row       = bit.rshift((vim.o.lines - float.height), 1),
+        col       = bit.rshift((vim.o.columns - float.width), 1),
+        zindex    = 50,
     }
 
     m_window = require('Trans.window')(true, opt)
-    m_window.animation = float.animation
 
     set_title()
     m_content = m_window.contents[2]
@@ -95,7 +95,6 @@ return function(word)
         set_tag_hl(engine_us, 'fail')
     end
 
-    m_window:draw()
     m_window:open()
     m_window:bufset('bufhidden', 'wipe')
 
diff --git a/lua/Trans/view/hover.lua b/lua/Trans/view/hover.lua
index 1d21e85..601b377 100644
--- a/lua/Trans/view/hover.lua
+++ b/lua/Trans/view/hover.lua
@@ -1,5 +1,6 @@
 local api = vim.api
 local conf = require('Trans').conf
+local new_window = require('Trans.window')
 
 local m_window
 local m_result
@@ -41,7 +42,6 @@ local process = {
                 it(m_result.collins and icon.star:rep(m_result.collins) or icon.notfound, 'TransCollins'),
                 it(m_result.oxford == 1 and icon.yes or icon.no)
             )
-
         end
         m_content:addline(line)
     end,
@@ -166,14 +166,6 @@ local process = {
             m_content:newline('')
         end
     end,
-
-    failed = function()
-        m_content:addline(
-            it(conf.icon.notfound .. m_indent .. '没有找到相关的翻译', 'TransFailed')
-        )
-
-        m_window:set_width(m_content.lines[1]:width())
-    end,
 }
 
 
@@ -264,64 +256,134 @@ action = {
     end,
 }
 
+local function handle()
+    local hover = conf.hover
+    if hover.auto_play then
+        local ok = pcall(action.play)
+        if not ok then
+            vim.notify('自动发音失败， 请检查README发音部分', vim.log.WARN)
+        end
+    end
+
+    for _, field in ipairs(conf.order) do
+        process[field]()
+    end
+
+    for act, key in pairs(hover.keymap) do
+        vim.keymap.set('n', key, action[act], { buffer = true, silent = true })
+    end
+end
+
+local function online_query(word)
+    -- TODO :Progress Bar
+    local wait = {}
+    local size = 0
+    for k, _ in pairs(conf.engine) do
+        size = size + 1
+        wait[size] = require('Trans.query.' .. k)(word)
+    end
+    local error_msg = conf.icon.notfound .. '    没有找到相关的翻译'
+
+    m_window:set_height(1)
+    local width = m_window.width
+    m_window:set_width(error_msg:width())
+    if size == 0 then
+        m_content:addline(it(error_msg, 'TransFailed'))
+        m_window:open()
+        return
+    end
+
+    m_window:open()
+
+    local timeout = conf.hover.timeout
+    local interval = math.floor(timeout / m_window.width)
+
+    -- --- char: ■ | □ | ▇ | ▏ ▎ ▍ ▌ ▋ ▊ ▉ █
+    -- --- ◖■■■■■■■◗▫◻ ▆ ▆ ▇⃞ ▉⃞
+    local cell = '▇'
+
+    local i = 1
+    local do_progress
+    do_progress = function()
+        m_content:wipe()
+        for j = 1, size do
+            local res = wait[j]()
+            if res then
+                m_result = res
+                m_window:set_width(width)
+                handle()
+                m_content:attach()
+
+                -- TODO :Animation
+                m_window.height = m_content:actual_height(true)
+                m_window:open {
+                    animation = 'fold',
+                }
+                return
+
+            elseif res == false then
+                table.remove(wait, j)
+                size = size - 1
+            end
+        end
+
+        if i == m_window.width or size == 0 then
+            --- HACK : change framework
+            m_content:addline(
+                it(error_msg, 'TransFailed')
+            )
+
+            m_content:attach()
+
+        else
+            m_content:addline(
+                it(cell:rep(i), 'MoreMsg')
+            )
+            i = i + 1
+            m_content:attach()
+            vim.defer_fn(do_progress, interval)
+        end
+    end
+
+    do_progress()
+end
 
 return function(word)
     vim.validate {
         word = { word, 's' },
     }
 
-    m_result = require('Trans.query.offline')(word)
     local hover = conf.hover
-
-    m_window = require("Trans.window")(false, {
-        relative = 'cursor',
-        width    = hover.width,
-        height   = hover.height,
-        title    = hover.title,
-        border   = hover.border,
-        col      = 1,
-        row      = 1,
+    m_window = new_window(false, {
+        relative  = 'cursor',
+        width     = hover.width,
+        height    = hover.height,
+        title     = hover.title,
+        border    = hover.border,
+        animation = hover.animation,
+        col       = 1,
+        row       = 1,
     })
 
-    m_window.animation = hover.animation
     m_content = m_window.contents[1]
 
+    m_result = require('Trans.query.offline')(word)
+    if m_result then
+        handle()
+        m_window:open({
+            callback = function()
+                m_window:set('wrap', true)
+            end,
+        })
 
-    -- TODO :Progress Bar
-    if not m_result then
-        m_result = require('Trans.query.baidu')(word)
-    end
-
-    if m_result and m_result.translation then
-        if hover.auto_play then
-            local ok = pcall(action.play)
-            if not ok then
-                vim.notify('自动发音失败， 请检查README发音部分', vim.log.WARN)
-            end
-        end
-
-        for _, field in ipairs(conf.order) do
-            process[field]()
-        end
-
-        for act, key in pairs(hover.keymap) do
-            vim.keymap.set('n', key, action[act], { buffer = true, silent = true })
+        local height = m_content:actual_height(true)
+        if height < m_window.height then
+            m_window:set_height(height)
         end
     else
-        process.failed()
+        online_query(word)
     end
 
-    m_window:draw()
-
-    local height = m_content:actual_height(true)
-    if height < m_window.height then
-        m_window:set_height(height)
-    end
-
-    m_window:open(function()
-        m_window:set('wrap', true)
-    end)
-
     -- Auto Close
     if hover.auto_close_events then
         cmd_id = api.nvim_create_autocmd(
diff --git a/lua/Trans/window.lua b/lua/Trans/window.lua
index 31fd894..c95a735 100644
--- a/lua/Trans/window.lua
+++ b/lua/Trans/window.lua
@@ -60,10 +60,7 @@ local window = {
         end)
     end,
 
-    ---**第一次**绘制窗口的内容
-    ---@param self table 窗口的对象
     draw = function(self)
-        -- TODO :
         local offset = 0
         for _, content in ipairs(self.contents) do
             content:attach(offset)
@@ -71,9 +68,13 @@ local window = {
         end
     end,
 
-    open = function(self, callback)
-        local animation = self.animation
-        if animation.open then
+    open = function(self, opts)
+        self:draw()
+        opts = opts or {}
+        local interval = self.animation.interval
+        local animation = opts.animation or self.animation.open
+
+        if animation then
             check_busy()
 
             local handler
@@ -85,12 +86,12 @@ local window = {
                         busy = true
                         count = count + 1
                         api[action](self.winid, count)
-                        vim.defer_fn(handler[name], animation.interval)
+                        vim.defer_fn(handler[name], interval)
 
                     else
                         busy = false
-                        if callback then
-                            callback()
+                        if opts.callback then
+                            opts.callback()
                         end
                     end
                 end
@@ -101,7 +102,7 @@ local window = {
                 fold = wrap('fold', 'height'),
             }
 
-            handler[animation.open]()
+            handler[animation]()
         end
     end,
 
@@ -191,22 +192,19 @@ return function(entry, option)
     }
 
     local opt = {
-        relative  = nil,
-        width     = nil,
-        height    = nil,
-        border    = nil,
-        title     = nil,
-        col       = nil,
-        row       = nil,
+        relative  = option.relative,
+        width     = option.width,
+        height    = option.height,
+        border    = option.border,
+        title     = option.title,
+        col       = option.col,
+        row       = option.row,
         title_pos = nil,
         focusable = false,
-        zindex    = 100,
+        zindex    = option.zindex or 100,
         style     = 'minimal',
     }
 
-    for k, v in pairs(option) do
-        opt[k] = v
-    end
     if opt.title then
         opt.title_pos = 'center'
     end
@@ -219,12 +217,13 @@ return function(entry, option)
 
     local win
     win = {
-        winid    = winid,
-        bufnr    = bufnr,
-        width    = opt.width,
-        height   = opt.height,
-        hl       = api.nvim_create_namespace('TransWinHl'),
-        contents = setmetatable({}, {
+        winid     = winid,
+        bufnr     = bufnr,
+        width     = opt.width,
+        height    = opt.height,
+        animation = option.animation,
+        hl        = api.nvim_create_namespace('TransWinHl'),
+        contents  = setmetatable({}, {
             __index = function(self, key)
                 assert(type(key) == 'number')
                 self[key] = require('Trans.content')(win)
@@ -234,7 +233,6 @@ return function(entry, option)
     }
 
     setmetatable(win, { __index = window })
-
     -- FIXME  :config this
     win:bufset('filetype', 'Trans')
     win:bufset('buftype', 'nofile')