diff --git a/.config/nvim/init.lua b/.config/nvim/init.lua
index 76b1707..273605a 100644
--- a/.config/nvim/init.lua
+++ b/.config/nvim/init.lua
@@ -71,7 +71,6 @@ vim.o.foldlevel = 99
 vim.o.foldlevelstart = 99
 vim.o.foldenable = true
 vim.o.conceallevel = 0
-
 vim.g.markdown_folding = 1
 
 -- load general mapped keys
@@ -85,3 +84,8 @@ require('loadplugins')
 
 -- load general mapped keys
 require('keymap')
+
+vim.cmd([[
+set foldopen-=hor
+set foldclose-=hor
+]])
diff --git a/.config/nvim/lua/keymap.lua b/.config/nvim/lua/keymap.lua
index a2c4885..913ea2f 100644
--- a/.config/nvim/lua/keymap.lua
+++ b/.config/nvim/lua/keymap.lua
@@ -91,3 +91,13 @@ vim.keymap.set('n', '<F4>', ':Telescope find_files<CR>', { noremap = true })
 vim.keymap.set('n', '<F6>', ':call spelunker#toggle()<CR>', { noremap = true })
 vim.keymap.set('n', 'ZT', '<NOP>', { noremap = true })
 vim.keymap.set('n', 'Zt', '<NOP>', { noremap = true })
+
+-- kevinhwang91/nvim-ufo
+vim.keymap.set('n', 'K', function()
+  local winid = require('ufo').peekFoldedLinesUnderCursor()
+  if not winid then
+    -- choose one of coc.nvim and nvim lsp
+    vim.fn.CocActionAsync('definitionHover')             -- coc.nvim
+    vim.lsp.buf.hover()
+  end
+end)
diff --git a/.config/nvim/lua/loadplugins.lua b/.config/nvim/lua/loadplugins.lua
index fd21e0d..f92bcc8 100644
--- a/.config/nvim/lua/loadplugins.lua
+++ b/.config/nvim/lua/loadplugins.lua
@@ -359,6 +359,7 @@ return require("lazy").setup({
     -- better language highlighting by improved parsing
     {
       'nvim-treesitter/nvim-treesitter',
+      build = ':TSUpdate',
       dependencies = {
         -- automatically close html-tags
         'windwp/nvim-ts-autotag',