diff --git a/lua/Trans/init.lua b/lua/Trans/init.lua
index 94796a8..035bc13 100644
--- a/lua/Trans/init.lua
+++ b/lua/Trans/init.lua
@@ -20,11 +20,33 @@ local win_title = fn.has('nvim-0.9') == 1 and {
 --     "   ╚═╝   ╚═╝  ╚═╝╚═╝  ╚═╝╚═╝  ╚═══╝╚══════╝",
 --}
 
+-- 中文字符匹配函数
+local function is_chinese(str)
+    local len = #str
+    local left = 0
+    local right = len
+    local mid = 0
+    while left <= right do
+        mid = math.floor((left + right) / 2)
+        local cur_byte = string.byte(str, mid)
+        local cur_char = string.sub(str, mid, mid)
+        if cur_byte == nil then
+            break
+        end
+        if cur_byte > 128 then
+            return true
+        else
+            left = mid + 1
+        end
+    end
+    return false
+end
+
 string.width = api.nvim_strwidth
 string.isEn = function(self)
     local char = { self:byte(1, -1) }
     for i = 1, #self do
-        if char[i] > 127 then
+        if char[i] > 128 then
             return false
         end
     end
diff --git a/lua/Trans/view/float.lua b/lua/Trans/view/float.lua
index 16fae4a..15c7d49 100644
--- a/lua/Trans/view/float.lua
+++ b/lua/Trans/view/float.lua
@@ -82,6 +82,7 @@ local function process()
 end
 
 return function(word)
+    buffer:init()
     -- TODO :online query
     -- local float = conf.float
     vim.notify([[
diff --git a/lua/Trans/view/hover.lua b/lua/Trans/view/hover.lua
index 37ee5b8..7b09fca 100644
--- a/lua/Trans/view/hover.lua
+++ b/lua/Trans/view/hover.lua
@@ -1,9 +1,10 @@
 local api = vim.api
 local conf = require('Trans').conf
 local hover = conf.hover
-local buffer = require('Trans.buffer')()
 local error_msg = conf.icon.notfound .. '    没有找到相关的翻译'
 
+local buffer = require('Trans.buffer')()
+
 local node = require('Trans.node')
 local it, t, f = node.item, node.text, node.format
 
@@ -375,6 +376,7 @@ return function(word)
             width = width,
             height = math.min(buffer:height(width), hover.height)
         }
+
         run(function()
             win:set('wrap', true)
             handle_keymap(win, word)
diff --git a/lua/Trans/window.lua b/lua/Trans/window.lua
index 621142e..72dccf0 100644
--- a/lua/Trans/window.lua
+++ b/lua/Trans/window.lua
@@ -27,7 +27,9 @@ end
 ---@param option string option name
 ---@param value any
 function window:set(option, value)
-    api.nvim_win_set_option(self.winid, option, value)
+    if self:is_valid() then
+        api.nvim_win_set_option(self.winid, option, value)
+    end
 end
 
 ---@param name string option name