diff --git a/init.vim b/init.vim
old mode 100755
new mode 100644
index 7a19548..44c5384
--- a/init.vim
+++ b/init.vim
@@ -40,28 +40,28 @@ call plug#end()
 "set background=light
 colorscheme gruvbox
 let g:gruvbox_contrast_light = 'hard'
-
-
+let g:vimtex_view_general_viewer = 'okular'
 
 "Open NERDTree
 :nnoremap <silent> <expr> <F2> g:NERDTree.IsOpen() ? "\:NERDTreeClose<CR>" : bufexists(expand('%')) ? "\:NERDTreeFind<CR>" : "\:NERDTree<CR>"
 
 "Coc.nvim
 inoremap <silent><expr> <TAB>
-      \ coc#pum#visible() ? coc#_select_confirm() :
-      \ coc#expandableOrJumpable() ? "\<C-r>=coc#rpc#request('doKeymap', ['snippets-expand-jump',''])\<CR>" :
-      \ CheckBackSpace() ? "\<TAB>" :
-      \ coc#refresh()
+            \ coc#pum#visible() ? coc#_select_confirm() :
+            \ coc#expandableOrJumpable() ? "\<C-r>=coc#rpc#request('doKeymap', ['snippets-expand-jump',''])\<CR>" :
+            \ CheckBackSpace() ? "\<TAB>" :
+            \ coc#refresh()
 inoremap <silent><expr> <cr> pumvisible() ? coc#_select_confirm()
-                              \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"
-
+            \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"
 
 function! CheckBackSpace() abort
-  let col = col('.') - 1
-  return !col || getline('.')[col - 1]  =~# '\s'
+    let col = col('.') - 1
+    return !col || getline('.')[col - 1]  =~# '\s'
 endfunction
 
-let g:coc_snippet_next = '<tab>'
+let g:coc_snippet_next = '<tab>' 
+inoremap <silent><expr> <CR> coc#pum#visible() ? coc#pum#confirm()
+            \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"
 
 " Comments
 let mapleader = ","
@@ -107,63 +107,76 @@ set splitright
 set splitbelow
 
 
-function! IBusOff()
-    " Lưu engine hiện tại
-    let g:ibus_prev_engine = system('ibus engine')
-    " Chuyển sang engine tiếng Anh
-    " Nếu bạn thấy cái cờ ở đây
-    " khả năng là font của bạn đang render emoji lung tung...
-    " xkb : us :: eng (không có dấu cách)
-    silent! execute '!ibus engine xkb🇺🇸:eng'
-endfunction
+"function! IBusOff()
+"let g:ibus_prev_engine = system('ibus engine')
+"" xkb : us :: eng (không có dấu cách)
+"silent! execute '!ibus engine xkb🇺🇸:eng'
+"endfunction
 
 
 
-function! IBusOn()
-    let l:current_engine = system('ibus engine')
-    " nếu engine được set trong normal mode thì
-    " lúc vào insert mode duùn luôn engine đó
-    if l:current_engine !~? 'xkb🇺🇸:eng'
-        let g:ibus_prev_engine = l:current_engine
+"function! IBusOn()
+"let l:current_engine = system('ibus engine')
+"if l:current_engine !~? 'xkb🇺🇸:eng'
+"let g:ibus_prev_engine = l:current_engine
+"endif
+"" Khôi phục lại engine
+"silent! execute '!ibus engine ' . g:ibus_prev_engine
+"endfunction
+
+"augroup IBusHandler
+"autocmd CmdLineEnter [/?] silent call IBusOn()
+"autocmd CmdLineLeave [/?] silent call IBusOff()
+"autocmd CmdLineEnter \? silent call IBusOn()
+"autocmd CmdLineLeave \? silent call IBusOff()
+"autocmd InsertEnter * silent call IBusOn()
+"autocmd InsertLeave * silent call IBusOff()
+"augroup END
+
+"silent call IBusOff()
+"
+let g:input_lang = system('fcitx5-remote')
+function! FcitxOff()
+    let l:input_status = system('fcitx5-remote')
+    let g:input_lang = l:input_status
+    if l:input_status == 2 "second input method
+        silent! execute '!fcitx5-remote -c' 
     endif
-    " Khôi phục lại engine
-    silent! execute '!ibus engine ' . g:ibus_prev_engine
 endfunction
 
-augroup IBusHandler
-    " Khôi phục ibus engine khi tìm kiếm
-    autocmd CmdLineEnter [/?] silent call IBusOn()
-    autocmd CmdLineLeave [/?] silent call IBusOff()
-    autocmd CmdLineEnter \? silent call IBusOn()
-    autocmd CmdLineLeave \? silent call IBusOff()
-    " Khôi phục ibus engine khi vào insert mode
-    autocmd InsertEnter * silent call IBusOn()
-    " Tắt ibus engine khi vào normal mode
-    autocmd InsertLeave * silent call IBusOff()
+function! FcitxOn()
+    let l:input_status = system('fcitx5-remote')
+    if l:input_status == 1 
+        if g:input_lang == 2
+            silent! execute '!fcitx5-remote -o' 
+        endif
+    endif
+endfunction
+
+
+augroup fcitxHandler
+    autocmd CmdLineEnter [/?] silent call FcitxOn()
+    autocmd CmdLineLeave [/?] silent call FcitxOff()
+    autocmd CmdLineEnter \? silent call FcitxOn()
+    autocmd CmdLineLeave \? silent call FcitxOff()
+    autocmd InsertEnter * silent call FcitxOn()
+    autocmd InsertLeave * silent call FcitxOff()
 augroup END
+let g:vimtex_view_general_viewer = 'okular'
 
-silent call IBusOff()
-
-"Language tool
-let g:ale_linter_aliases = {'tex': ['tex', 'markdown']}
-let g:ale_languagetool_executable = "java"
-let g:ale_languagetool_options = "-jar /data/kits/languagetool/languagetool-commandline.jar --languagemodel /data/kits/languagemodel/ --word2vecmodel /data/kits/languagemodel/ --disable WHITESPACE_RULE,COMMA_PARENTHESIS_WHITESPACE"
-let g:ale_disable_lsp = 1
 map <F3> :ALEToggle<CR>
-
-
 "Use 24-bit (true-color) mode in Vim/Neovim when outside tmux.
 "If you're using tmux version 2.2 or later, you can remove the outermost $TMUX check and use tmux's 24-bit color support
 "(see < http://sunaku.github.io/tmux-24bit-color.html#usage > for more information.)
 if (empty($TMUX))
-  if (has("nvim"))
-    "For Neovim 0.1.3 and 0.1.4 < https://github.com/neovim/neovim/pull/2198 >
-    let $NVIM_TUI_ENABLE_TRUE_COLOR=1
-  endif
-  "For Neovim > 0.1.5 and Vim > patch 7.4.1799 < https://github.com/vim/vim/commit/61be73bb0f965a895bfb064ea3e55476ac175162 >
-  "Based on Vim patch 7.4.1770 (`guicolors` option) < https://github.com/vim/vim/commit/8a633e3427b47286869aa4b96f2bfc1fe65b25cd >
-  " < https://github.com/neovim/neovim/wiki/Following-HEAD#20160511 >
-  if (has("termguicolors"))
-    set termguicolors
-  endif
+    if (has("nvim"))
+        "For Neovim 0.1.3 and 0.1.4 < https://github.com/neovim/neovim/pull/2198 >
+        let $NVIM_TUI_ENABLE_TRUE_COLOR=1
+    endif
+    "For Neovim > 0.1.5 and Vim > patch 7.4.1799 < https://github.com/vim/vim/commit/61be73bb0f965a895bfb064ea3e55476ac175162 >
+    "Based on Vim patch 7.4.1770 (`guicolors` option) < https://github.com/vim/vim/commit/8a633e3427b47286869aa4b96f2bfc1fe65b25cd >
+    " < https://github.com/neovim/neovim/wiki/Following-HEAD#20160511 >
+    if (has("termguicolors"))
+        set termguicolors
+    endif
 endif