diff --git a/README.md b/README.md
index 60faa86..5913056 100644
--- a/README.md
+++ b/README.md
@@ -7,16 +7,18 @@
 .
 ├── coc-settings.json
 ├── init.lua
-├── lazy-lock.json
 ├── lua
 │   ├── core
+│   │   ├── G.lua
 │   │   ├── keymap.lua
 │   │   ├── options.lua
 │   │   └── plug.lua
+│   ├── Filetype
+│   │   ├── c.lua
+│   │   └── markdown.lua
 │   └── Plugin
 │       ├── coc.lua
-│       ├── lualine.lua
-│       └── nerdcommenter.lua
+│       └── lualine.lua
 └── README.md
 ```
 ## vim-surround插件
@@ -56,6 +58,28 @@ select the closest text object.
 
 ![官方给的gif](https://raw.githubusercontent.com/gcmt/wildfire.vim/master/_assets/preview.gif)
 
-## nerdcommenter
-快速注释插件
-`<leader>c<space>` 切换注释状态
+## Markdow-preview
+下载后需要到插件目录下使用`npm install`或者`yarn install`
+
+
+
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diff --git a/coc-settings.json b/coc-settings.json
index ffe1420..a484f82 100644
--- a/coc-settings.json
+++ b/coc-settings.json
@@ -1,8 +1,6 @@
 {
+
   "snippets.ultisnips.pythonPrompt": false,
   "explorer.icon.enableNerdfont": true,
-  "explorer.toggle": true,
-  "markdown-preview-enhanced.previewTheme":"github-dark.css",
-  "markdown-preview-enhanced.latexEngine": "pdflatex",
-  "markdown-preview-enhanced.chromePath": "/usr/bin/wyeb"
+  "explorer.toggle": true
 }
diff --git a/init.lua b/init.lua
index 5bbdcd6..7d7abcf 100644
--- a/init.lua
+++ b/init.lua
@@ -1,10 +1,7 @@
-vim.g['mapleader'] = ' '
-
 require('core.plug')
 require('core.options')
 require('core.keymap')
+
 require('Plugin.coc')
 require('Plugin.lualine')
-require('Plugin.nerdcommenter')
-
-
+require('Plugin.Imchange')
diff --git a/lazy-lock.json b/lazy-lock.json
deleted file mode 100644
index 3052808..0000000
--- a/lazy-lock.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "coc.nvim": { "branch": "release", "commit": "e86b15bbcabc2cc1f20a40e7c127a424e7ad3850" },
-  "colorizer": { "branch": "master", "commit": "72790a003d5a706c287486a1a81e3a6b32158b54" },
-  "gruvbox": { "branch": "master", "commit": "bf2885a95efdad7bd5e4794dd0213917770d79b7" },
-  "lazy.nvim": { "branch": "main", "commit": "96d759d1cbd8b0bd0ea0a0c2987f99410272f348" },
-  "lazygit.nvim": { "branch": "main", "commit": "32bffdebe273e571588f25c8a708ca7297928617" },
-  "lualine.nvim": { "branch": "master", "commit": "0050b308552e45f7128f399886c86afefc3eb988" },
-  "markdown-preview.vim": { "branch": "master", "commit": "97388dc537454a90422f186cb4e1a4f9a3f95122" },
-  "nerdcommenter": { "branch": "master", "commit": "98cc4a2d64ca67cccbf5b5cf47c682ebadaaff58" },
-  "vim-easy-align": { "branch": "master", "commit": "12dd6316974f71ce333e360c0260b4e1f81169c3" },
-  "vim-easymotion": { "branch": "master", "commit": "b3cfab2a6302b3b39f53d9fd2cd997e1127d7878" },
-  "vim-surround": { "branch": "master", "commit": "3d188ed2113431cf8dac77be61b842acb64433d9" },
-  "wildfire.vim": { "branch": "master", "commit": "b371e2b1d938ae0e164146136051de164ecb9aa5" }
-}
\ No newline at end of file
diff --git a/lua/Filetype/markdown.lua b/lua/Filetype/markdown.lua
index 475f03b..2b8d825 100644
--- a/lua/Filetype/markdown.lua
+++ b/lua/Filetype/markdown.lua
@@ -1,4 +1,103 @@
-local map = vim.api.nvim_set_keymap
-local openPreview = ":CocCommand markdown-preview-enhanced.openPreview<CR>"
+local G = require("core.G")
+local TogglePreview = "<Plug>MarkdownPreviewToggle"
 
-map('n', '<leader>r', openPreview, {noremap = false})
+--set to 1, nvim will open the preview window after entering the markdown buffer
+--default: 0
+G.g.mkdp_auto_start = 1
+
+--set to 1, the nvim will auto close current preview window when change
+--from markdown buffer to another buffer
+--default: 1
+G.g.mkdp_auto_close = 1
+
+--set to 1, the vim will refresh markdown when save the buffer or
+--leave from insert mode, default 0 is auto refresh markdown as you edit or
+--move the cursor
+--default: 0
+G.g.mkdp_refresh_slow = 0
+
+--set to 1, the MarkdownPreview command can be use for all files,
+--by default it can be use in markdown file
+--default: 0
+G.g.mkdp_command_for_global = 0
+
+--set to 1, preview server available to others in your network
+--by default, the server listens on localhost (127.0.0.1)
+--default: 0
+G.g.mkdp_open_to_the_world = 0
+
+--use custom IP to open preview page
+--useful when you work in remote vim and preview on local browser
+--more detail see: https://github.com/iamcco/markdown-preview.nvim/pull/9
+--default empty
+G.g.mkdp_open_ip = ''
+
+--specify browser to open preview page
+--for path with space
+--valid: `/path/with\ space/xxx`
+--invalid: `/path/with\\ space/xxx`
+--default: ''
+G.g.mkdp_browser = 'wyeb'
+
+--set to 1, echo preview page url in command line when open preview page
+--default is 0
+G.g.mkdp_echo_preview_url = 0
+
+--a custom vim function name to open preview page
+--this function will receive url as param
+--default is empty
+G.g.mkdp_browserfunc = ''
+
+--options for markdown render
+--mkit: markdown-it options for render
+--katex: katex options for math
+--uml: markdown-it-plantuml options
+--maid: mermaid options
+--disable_sync_scroll: if disable sync scroll, default 0
+--sync_scroll_type: 'middle', 'top' or 'relative', default value is 'middle'
+--  middle: mean the cursor position alway show at the middle of the preview page
+--  top: mean the vim top viewport alway show at the top of the preview page
+--  relative: mean the cursor position alway show at the relative positon of the preview page
+--hide_yaml_meta: if hide yaml metadata, default is 1
+--sequence_diagrams: js-sequence-diagrams options
+--content_editable: if enable content editable for preview page, default: v:false
+--disable_filename: if disable filename header for preview page, default: 0
+
+--G.cmd([[
+--  let g:mkdp_preview_options = {
+--      \'mkit': {},
+--      \'katex': {},
+--      \'uml': {},
+--      \'maid': {},
+--      \'disable_sync_scroll': 0,
+--      \'sync_scroll_type': 'middle',
+--      \'hide_yaml_meta': 1,
+--      \'sequence_diagrams': {},
+--      \'flowchart_diagrams': {},
+--      \'content_editable': v:false,
+--      \'disable_filename': 0,
+--      \'toc': {}
+--      \}
+--      ]])
+--use a custom markdown style must be absolute path
+--like '/Users/username/markdown.css' or expand('~/markdown.css')
+G.g.mkdp_markdown_css = ''
+
+--use a custom highlight style must absolute path
+--like '/Users/username/highlight.css' or expand('~/highlight.css')
+G.g.mkdp_highlight_css = ''
+
+--use a custom port to start server or empty for random
+G.g.mkdp_port = '12345'
+
+--preview page title
+--${name} will be replace with the file name
+G.g.mkdp_page_title = '「${name}」'
+
+--recognized filetypes
+--these filetypes will have MarkdownPreview... commands
+G.g.mkdp_filetypes = {'markdown'}
+
+--set default theme (dark or light)
+--By default the theme is define according to the preferences of the system
+G.g.mkdp_theme = 'dark'
diff --git a/lua/core/G.lua b/lua/G.lua
similarity index 95%
rename from lua/core/G.lua
rename to lua/G.lua
index 35101c0..68c2fbe 100644
--- a/lua/core/G.lua
+++ b/lua/G.lua
@@ -5,6 +5,7 @@ G.b = vim.b
 G.o = vim.o
 G.fn = vim.fn
 G.api = vim.api
+G.opt = vim.opt
 
 function G.map(maps)
     for _,map in pairs(maps) do
@@ -33,4 +34,6 @@ function G.eval(c)
     return G.api.nvim_eval(c)
 end
 
+G.g.mapleader = ' '
+
 return G
diff --git a/lua/Plugin/Imchange.lua b/lua/Plugin/Imchange.lua
new file mode 100644
index 0000000..c549b5f
--- /dev/null
+++ b/lua/Plugin/Imchange.lua
@@ -0,0 +1,29 @@
+local G, im = require("G"), "keyboard-us"
+
+function InsertLeave()
+  local t = io.popen("fcitx5-remote -n")
+  im = t:read()
+  G.cmd(":silent !fcitx5-remote -c")
+end
+
+function InsertEnter()
+  if im == 'pinyin'
+  then
+    print(im)
+    G.cmd("!fcitx5-remote -s pinyin")
+  end
+end
+
+G.api.nvim_create_autocmd(
+  {"InsertLeave"}, {
+    pattern = "*",
+    callback = InsertLeave
+  }
+)
+
+G.api.nvim_create_autocmd(
+  {"InsertEnter"}, {
+    pattern = "*",
+    callback = InsertEnter
+  }
+)
diff --git a/lua/Plugin/Markdown-preview.lua b/lua/Plugin/Markdown-preview.lua
deleted file mode 100644
index 42ce13e..0000000
--- a/lua/Plugin/Markdown-preview.lua
+++ /dev/null
@@ -1,3 +0,0 @@
-local G = require("core.G")
-
-G.g['mkdp_path_to_chrome'] = '/usr/bin/wyeb'
diff --git a/lua/Plugin/coc.lua b/lua/Plugin/coc.lua
index 0a04591..021433c 100644
--- a/lua/Plugin/coc.lua
+++ b/lua/Plugin/coc.lua
@@ -3,7 +3,6 @@ vim.g['coc_global_extensions'] = {
   "coc-python",
   "coc-json",
   "coc-lua",
-  "coc-markdown-preview-enhanced",
   "coc-webview",
 
   "coc-translator",
diff --git a/lua/Plugin/nerdcommenter.lua b/lua/Plugin/nerdcommenter.lua
deleted file mode 100644
index 2de014a..0000000
--- a/lua/Plugin/nerdcommenter.lua
+++ /dev/null
@@ -1,28 +0,0 @@
-vim.cmd([[
-" Create default mappings
-let g:NERDCreateDefaultMappings = 1
-
-" Add spaces after comment delimiters by default
-let g:NERDSpaceDelims = 1
-
-" Use compact syntax for prettified multi-line comments
-let g:NERDCompactSexyComs = 1
-
-" Align line-wise comment delimiters flush left instead of following code indentation
-let g:NERDDefaultAlign = 'left'
-
-" Set a language to use its alternate delimiters by default
-let g:NERDAltDelims_java = 1
-
-" Add your own custom formats or override the defaults
-let g:NERDCustomDelimiters = { 'c': { 'left': '/**','right': '*/' } }
-
-" Allow commenting and inverting empty lines (useful when commenting a region)
-let g:NERDCommentEmptyLines = 1
-
-" Enable trimming of trailing whitespace when uncommenting
-let g:NERDTrimTrailingWhitespace = 1
-
-" Enable NERDCommenterToggle to check all selected lines is commented or not 
-let g:NERDToggleCheckAllLines = 1
-]])
diff --git a/lua/core/keymap.lua b/lua/core/keymap.lua
index a7761b0..8324c05 100644
--- a/lua/core/keymap.lua
+++ b/lua/core/keymap.lua
@@ -1,4 +1,4 @@
-local  G,opt = require("core.G"), {noremap = true}
+local G, opt = require('G'), {noremap = true}
 
 G.map({
 {'n', '<leader>y', '"+y', opt},
@@ -10,7 +10,7 @@ G.map({
 {'v', '<leader>d', '"+d', opt},
 
 {'n', '<leader>nh', ':nohlsearch<CR>', opt},
-{'n', '<leader>rp',':%s/',opt},
+{'n', '<leader>rp', ':%s/',opt},
 
 {'v', 'L', '$',                 opt},
 {'v', 'H', '^',                 opt},
@@ -66,12 +66,3 @@ G.map({
 
 
 
-
-
-
-
-
-
-
-
-
diff --git a/lua/core/options.lua b/lua/core/options.lua
index f1f1e8b..85acd0f 100644
--- a/lua/core/options.lua
+++ b/lua/core/options.lua
@@ -1,83 +1,69 @@
-local set= vim.opt
+local G = require('G')
+
 -- 行号
-set.nu            = true
-set.rnu           = true
-set.scrolloff     = 999
+G.opt.nu            = true
+G.opt.rnu           = true
+G.opt.scrolloff     = 999
 
 -- 自动保存
-set.autowrite     = true
-set.autowriteall  = true
+G.opt.autowrite     = true
+G.opt.autowriteall  = true
 
 -- tab键
-set.sw            = 2
-set.ts            = 2
-set.softtabstop   = 2
-set.smarttab      = true
-set.expandtab     = true
-set.autoindent    = true
+G.opt.sw            = 2
+G.opt.ts            = 2
+G.opt.softtabstop   = 2
+G.opt.smarttab      = true
+G.opt.expandtab     = true
+G.opt.autoindent    = true
 
 -- 光标
-set.cursorline    = true
+G.opt.cursorline    = true
 
 -- 分屏
-set.splitright    = true
-set.splitbelow    = true
+G.opt.splitright    = true
+G.opt.splitbelow    = true
 
 -- 搜索
-set.ignorecase    = true
-set.incsearch     = true
+G.opt.ignorecase    = true
+G.opt.incsearch     = true
 
 -- 不换行
-set.textwidth     = 999
-set.wrap          = false
+G.opt.textwidth     = 999
+G.opt.wrap          = false
 
 -- 背景
-set.background    = 'dark'
+G.opt.background    = 'dark'
 
 -- 主题
-vim.cmd("colorscheme gruvbox")
-
--- 输入法自动根据模式自动切换
-vim.cmd([[ au InsertLeave * :silent !fcitx5-remote -c ]])
+G.cmd("colorscheme gruvbox")
 
 -- 文件判断
-vim.cmd([[ filetype plugin indent on ]])
+G.cmd("filetype plugin indent on")
 
 -- 取消换行注释
-vim.api.nvim_create_autocmd({ "BufEnter" }, {
+G.api.nvim_create_autocmd({ "BufEnter" }, {
 	pattern = { "*" },
 	callback = function()
 		-- vim.opt.formatoptions = vim.opt.formatoptions - { "c", "r", "o" }
-		vim.opt.formatoptions = vim.opt.formatoptions
-			- "o" -- O and o, don't continue comments
+		  G.opt.formatoptions = G.opt.formatoptions
+		 	- "o" -- O and o, don't continue comments
 			+ "r" -- But do continue when pressing enter.
 	end,
 })
 
 local require_markdown = {}
+
 function require_markdown()
-  require('Filetype.markdown') 
+  require('Filetype.markdown')
+  G.cmd('MarkdownPreviewToggle')
 end
-vim.api.nvim_create_autocmd(
-{"FileType"}, { pattern = "markdown", callback = require_markdown }
+
+G.api.nvim_create_autocmd(
+	{"FileType"}, {
+    pattern = "markdown",
+    callback = require_markdown
+  }
 )
 
 
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
diff --git a/lua/core/plug.lua b/lua/core/plug.lua
index 7dc9e04..0e15e46 100644
--- a/lua/core/plug.lua
+++ b/lua/core/plug.lua
@@ -1,48 +1,45 @@
--- lazy插件自动安装插件
-local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
-if not vim.loop.fs_stat(lazypath) then
-  vim.fn.system({
-    "git",
-    "clone",
-    "--depth=1",
-    "--filter=blob:none",
-    "https://github.com/folke/lazy.nvim.git",
-    "--branch=stable", -- latest stable release
-    lazypath,
-  })
+local ensure_packer = function()
+  local fn = vim.fn
+  local install_path = fn.stdpath('data')..'/site/pack/packer/start/packer.nvim'
+  if fn.empty(fn.glob(install_path)) > 0 then
+    fn.system({'git', 'clone', '--depth', '1', 'https://github.com/wbthomason/packer.nvim', install_path})
+    vim.cmd [[packadd packer.nvim]]
+    return true
+  end
+  return false
 end
 
-vim.opt.rtp:prepend(lazypath)
+local packer_bootstrap = ensure_packer()
+local G = require('G')
+return require('packer').startup(function(use)
 
-require("lazy").setup({
   -- 主题插件
-  'nvim-lualine/lualine.nvim',
-  'morhetz/gruvbox',
+  use 'nvim-lualine/lualine.nvim'
+  use 'morhetz/gruvbox'
 
   -- lsp 补全
-  {'neoclide/coc.nvim', branch = 'release'},
+  use {'neoclide/coc.nvim', branch = 'release'}
 
   -- surround 和 wildfire 配合有神奇的效果
-  'tpope/vim-surround',
-  'gcmt/wildfire.vim',
-
-  -- easymotion
- 'easymotion/vim-easymotion',
+  use 'tpope/vim-surround'
+  use 'gcmt/wildfire.vim'
+      -- easymotion
+  use 'easymotion/vim-easymotion'
 
   -- 格式整理
-  'junegunn/vim-easy-align',
- 'preservim/nerdcommenter',
+  use 'junegunn/vim-easy-align'
+  use 'preservim/nerdcommenter'
 
   --颜色识别
-  'lilydjwg/colorizer',
+  use 'lilydjwg/colorizer'
 
   --markdown
-  'iamcco/markdown-preview.vim',
+  use 'iamcco/markdown-preview.nvim'
 
   -- git
-  'kdheepak/lazygit.nvim',
-})
-
+  use 'kdheepak/lazygit.nvim'
+
+end)