diff --git a/docs/2019-ithelp-ironman/04_Lifecycle.md b/docs/2019-ithelp-ironman/04_Lifecycle.md
index 1bf13b3..e554f98 100644
--- a/docs/2019-ithelp-ironman/04_Lifecycle.md
+++ b/docs/2019-ithelp-ironman/04_Lifecycle.md
@@ -251,12 +251,7 @@ Hook: destroyed
 
 ## Demo
 
-<p class="codepen" data-height="265" data-theme-id="0" data-default-tab="js,result" data-user="peterhpchen" data-slug-hash="oapdBg" style="height: 265px; box-sizing: border-box; display: flex; align-items: center; justify-content: center; border: 2px solid; margin: 1em 0; padding: 1em;" data-pen-title="Lifecyle">
-  <span>See the Pen <a href="https://codepen.io/peterhpchen/pen/oapdBg/">
-  Lifecyle</a> by Peter Chen (<a href="https://codepen.io/peterhpchen">@peterhpchen</a>)
-  on <a href="https://codepen.io">CodePen</a>.</span>
-</p>
-<script async src="https://static.codepen.io/assets/embed/ei.js"></script>
+* [CodePan](https://codepen.io/peterhpchen/pen/oapdBg)
 
 ## 小結