add alert
diff --git a/public/stylesheets/scss/main.scss b/public/stylesheets/scss/main.scss
index 826e1b0..ae780a8 100644
--- a/public/stylesheets/scss/main.scss
+++ b/public/stylesheets/scss/main.scss
@@ -13,3 +13,13 @@
 
 @import "page.view";
 @import "page.explore";
+
+#v5-link {
+    position: fixed;
+    bottom: 20px;
+    left: 50%;
+    width: 300px;
+    margin-left: -150px;
+    text-align: center;
+    z-index: 1000;
+}
diff --git a/views/layouts/basic.jade b/views/layouts/basic.jade
index b22b4fd..ec6dbc4 100644
--- a/views/layouts/basic.jade
+++ b/views/layouts/basic.jade
@@ -36,6 +36,16 @@
                     div 访问官网
             a.close-btn(href="javascript:;", onclick="closeApacheBanner(true)") x
 
+        #v5-link.alert.alert-warning.alert-dismissible
+            if ecWWWLang == 'en'
+                span Back to the #[a(id="a2", href="https://echarts.apache.org/zh/index.html") latest website.]
+            else
+                span 返回 #[a(id="a1", href="https://echarts.apache.org/zh/index.html") 最新的官网]
+
+            button.close(type="button", data-dismiss="alert", aria-label="Close")
+                span(aria-hidden="true") ×
+
+
         block content
 
         script(type='text/javascript', src='#{cdnThirdParty.jquery_1_11_3}')