use cdn for scrollreveal
diff --git a/_jade/en/index.jade b/_jade/en/index.jade
index cdb651d..032d198 100644
--- a/_jade/en/index.jade
+++ b/_jade/en/index.jade
@@ -5,7 +5,7 @@
 
 block extra_head
     title Apache ECharts
-    script(src="#{cdnPayRoot}/#{ecWWWLang}/vendors/scrollreveal.js")
+    script(src="https://cdn.jsdelivr.net/npm/scrollreveal@4.0.7/dist/scrollreveal.min.js")
     script(src="https://cdn.jsdelivr.net/npm/lottie-web@5.7.6/build/player/lottie.min.js")
 
 block content
diff --git a/_jade/zh/index.jade b/_jade/zh/index.jade
index 853e7e8..a8175c6 100644
--- a/_jade/zh/index.jade
+++ b/_jade/zh/index.jade
@@ -4,7 +4,7 @@
 
 block extra_head
     title Apache ECharts
-    script(src="#{cdnPayRoot}/#{ecWWWLang}/vendors/scrollreveal.js")
+    script(src="https://cdn.jsdelivr.net/npm/scrollreveal@4.0.7/dist/scrollreveal.min.js")
     script(src="https://cdn.jsdelivr.net/npm/lottie-web@5.7.6/build/player/lottie.min.js")
 
 block content