diff --git a/examples/components/side-nav.vue b/examples/components/side-nav.vue
index b38a2929e..0aa38e4da 100644
--- a/examples/components/side-nav.vue
+++ b/examples/components/side-nav.vue
@@ -125,7 +125,7 @@
       <li class="nav-item sponsors">
         <a>Sponsors</a>
         <ul class="pure-menu-list sub-nav">
-          <li class="nav-item">
+          <li class="nav-item" v-show="lang !== 'zh-CN'">
             <a href="https://tipe.io/?ref=element" target="_blank">
               <img src="~examples/assets/images/tipe.svg" alt="tipe.io">
             </a>
@@ -217,8 +217,11 @@
         style.opacity = this.isFade ? '0.5' : '1';
         return style;
       },
+      lang() {
+        return this.$route.meta.lang;
+      },
       langConfig() {
-        return compoLang.filter(config => config.lang === this.$route.meta.lang)[0]['nav'];
+        return compoLang.filter(config => config.lang === this.lang)[0]['nav'];
       }
     },
     methods: {
diff --git a/examples/docs/en-US/tree.md b/examples/docs/en-US/tree.md
index 760f813b6..ad61a76b6 100644
--- a/examples/docs/en-US/tree.md
+++ b/examples/docs/en-US/tree.md
@@ -1045,10 +1045,10 @@ Only one node among the same level can be expanded at one time.
 | setCurrentKey   | set highlighted node by key, only works when `node-key` is assigned | (key) the node's key to be highlighted |
 | setCurrentNode  | set highlighted node, only works when `node-key` is assigned | (node) the node to be highlighted |
 | getNode         | get node by data or key | (data) the node's data or key |
-| remove          | remove a node | (data) the node's data or node to be delete |
-| append          | append a child node for a node in tree | (data, parentNode) Accept two parameters: 1. child node's data 2. parent node's data, key or node |
-| insertBefore    | insert a node before a node in tree | (data, refNode) (data, parentNode) Accept two parameters: 1. sibling node's data 2. reference node's data, key or node |
-| insertAfter     | insert a node after a node in tree   | (data, refNode) 1. sibling node's data 2. reference node's data, key or node |
+| remove          | remove a node | (data) the node's data or node to be deleted |
+| append          | append a child node to a given node in the tree | (data, parentNode) 1. child node's data to be appended 2. parent node's data, key or node |
+| insertBefore    | insert a node before a given node in the tree | (data, refNode) 1. node's data to be inserted 2. reference node's data, key or node |
+| insertAfter     | insert a node after a given node in the tree   | (data, refNode) 1. node's data to be inserted 2. reference node's data, key or node |
 
 ### Events
 | Event Name     | Description                              | Parameters                               |
@@ -1056,7 +1056,7 @@ Only one node among the same level can be expanded at one time.
 | node-click     | triggers when a node is clicked          | three parameters: node object corresponding to the node clicked, `node` property of TreeNode, TreeNode itself |
 | node-contextmenu     | triggers when a node is clicked by right button          | four parameters: event, node object corresponding to the node clicked, `node` property of TreeNode, TreeNode itself |
 | check-change   | triggers when the selected state of the node changes | three parameters: node object corresponding to the node whose selected state is changed, whether the node is selected, whether node's subtree has selected nodes |
-| check   | triggers after click checkbox of node | two parameters: node object corresponding to the node whose selected state is changed, tree checked status object which has four props: checkedNodes, checkedKeys, halfCheckedNodes, halfCheckedKeys |
+| check   | triggers after clicking the checkbox of a node | two parameters: node object corresponding to the node that is checked / unchecked, tree checked status object which has four props: checkedNodes, checkedKeys, halfCheckedNodes, halfCheckedKeys |
 | current-change | triggers when current node changes       | two parameters: node object corresponding to the current node, `node` property of TreeNode |
 | node-expand    | triggers when current node open          | three parameters: node object corresponding to the node opened, `node` property of TreeNode, TreeNode itself |
 | node-collapse  | triggers when current node close         | three parameters: node object corresponding to the node closed, `node` property of TreeNode, TreeNode itself |
diff --git a/examples/docs/es/menu.md b/examples/docs/es/menu.md
index bb694f621..3131b1415 100644
--- a/examples/docs/es/menu.md
+++ b/examples/docs/es/menu.md
@@ -69,6 +69,12 @@ Top bar NavMenu puede ser usado en distinto escenarios.
     <el-menu-item index="2-1">item one</el-menu-item>
     <el-menu-item index="2-2">item two</el-menu-item>
     <el-menu-item index="2-3">item three</el-menu-item>
+    <el-submenu index="2-4">
+      <template slot="title">item four</template>
+      <el-menu-item index="2-4-1">item one</el-menu-item>
+      <el-menu-item index="2-4-2">item two</el-menu-item>
+      <el-menu-item index="2-4-3">item three</el-menu-item>
+    </el-submenu>
   </el-submenu>
   <el-menu-item index="3"><a href="https://www.ele.me" target="_blank">Orders</a></el-menu-item>
 </el-menu>
@@ -87,6 +93,12 @@ Top bar NavMenu puede ser usado en distinto escenarios.
     <el-menu-item index="2-1">item one</el-menu-item>
     <el-menu-item index="2-2">item two</el-menu-item>
     <el-menu-item index="2-3">item three</el-menu-item>
+    <el-submenu index="2-4">
+      <template slot="title">item four</template>
+      <el-menu-item index="2-4-1">item one</el-menu-item>
+      <el-menu-item index="2-4-2">item two</el-menu-item>
+      <el-menu-item index="2-4-3">item three</el-menu-item>
+    </el-submenu>
   </el-submenu>
   <el-menu-item index="3"><a href="https://www.ele.me" target="_blank">Orders</a></el-menu-item>
 </el-menu>
diff --git a/examples/docs/es/tree.md b/examples/docs/es/tree.md
index 34c2c4d81..03753be92 100644
--- a/examples/docs/es/tree.md
+++ b/examples/docs/es/tree.md
@@ -1043,10 +1043,10 @@ Solo puede ser expandido un nodo del mismo nivel a la vez.
 | setCurrentKey     | establece el nodo resaltado por la clave, solo funciona si `node-key` está asignado | (key) la clave del nodo a ser resaltado  |
 | setCurrentNode    | establece el nodo resaltado, solo funciona si `node-key` está asignado | (node) nodo a ser resaltado              |
 | getNode         | get node by data or key | (data) the node's data or key |
-| remove          | remove a node | (data) the node's data or node to be delete |
-| append          | append a child node for a node in tree | (data, parentNode) Accept two parameters: 1. child node's data 2. parent node's data, key or node |
-| insertBefore    | insert a node before a node in tree | (data, refNode) (data, parentNode) Accept two parameters: 1. sibling node's data 2. reference node's data, key or node |
-| insertAfter     | insert a node after a node in tree   | (data, refNode) 1. sibling node's data 2. reference node's data, key or node |
+| remove          | remove a node | (data) the node's data or node to be deleted |
+| append          | append a child node to a given node in the tree | (data, parentNode) 1. child node's data to be appended 2. parent node's data, key or node |
+| insertBefore    | insert a node before a given node in the tree | (data, refNode) 1. node's data to be inserted 2. reference node's data, key or node |
+| insertAfter     | insert a node after a given node in the tree   | (data, refNode) 1. node's data to be inserted 2. reference node's data, key or node |
 
 ### Eventos
 | Nombre del evento | Descripción                              | Parámetros                               |
@@ -1054,7 +1054,7 @@ Solo puede ser expandido un nodo del mismo nivel a la vez.
 | node-click        | se lanza cuando un nodo es pinchado      | tres parámetros: el objeto del nodo seleccionado, propiedad `node` de TreeNode y el TreeNode en si |
 | node-contextmenu     | triggers when a node is clicked by right button      | four parameters: event, node object corresponding to the node clicked, `node` property of TreeNode, TreeNode itself |
 | check-change      | se lanza cuando el estado de selección del nodo cambia | tres parámetros: objeto nodo que se corresponde con el que ha cambiado, booleano que dice si esta seleccionado, booleano que dice si el nodo tiene hijos seleccionados |
-| check   | triggers after click checkbox of node | two parameters: node object corresponding to the node whose selected state is changed, tree checked status object which has four props: checkedNodes, checkedKeys, halfCheckedNodes, halfCheckedKeys |
+| check   | triggers after clicking the checkbox of a node | two parameters: node object corresponding to the node that is checked / unchecked, tree checked status object which has four props: checkedNodes, checkedKeys, halfCheckedNodes, halfCheckedKeys |
 | current-change    | cambia cuando el nodo actual cambia      | dos parámetros: objeto nodo que se corresponde al nodo actual y propiedad `node` del TreeNode |
 | node-expand       | se lanza cuando el nodo actual se abre   | tres parámetros: el objeto del nodo abierto, propiedad `node` de TreeNode y el TreeNode en si |
 | node-collapse     | se lanza cuando el nodo actual se cierra | tres parámetros: el objeto del nodo cerrado, propiedad `node` de TreeNode y el TreeNode en si |
diff --git a/examples/pages/template/index.tpl b/examples/pages/template/index.tpl
index 06dea9a6c..03ebd814e 100644
--- a/examples/pages/template/index.tpl
+++ b/examples/pages/template/index.tpl
@@ -289,7 +289,7 @@
       </div>
     </div>
     <div class="sponsors">
-      <a class="sponsor" href="https://tipe.io/?ref=element" target="_blank">
+      <a class="sponsor" href="https://tipe.io/?ref=element" target="_blank" v-show="lang !== 'zh-CN'">
         <img width="35px" src="~examples/assets/images/tipe.svg" alt="tipe.io">
         <div>
           <p>Sponsored by Tipe.io</p>
@@ -350,6 +350,11 @@
   import { Hover } from 'perspective.js';
 
   export default {
+    data() {
+      return {
+        lang: this.$route.meta.lang
+      };
+    },
     mounted() {
       new Hover('.jumbotron', { // eslint-disable-line
         max: 3,