diff --git a/src/Config.js b/src/Config.js
index f53024f6..f1157e3d 100644
--- a/src/Config.js
+++ b/src/Config.js
@@ -13,7 +13,7 @@ const BUILTIN_IMGS={
 };
 
 const DEFAULT_CONFIG={
-    background_img: 'https://cdn.jsdelivr.net/gh/thuhole/webhole@gh-pages/static/bg/gbp.jpg',
+    background_img: 'https://cdn.jsdelivr.net/gh/thuhole/webhole@gh-pages/static/bg/cyberpunk.jpg',
     background_color: '#113366',
     pressure: false,
     easter_egg: true,
diff --git a/src/UserAction.js b/src/UserAction.js
index 309e2c38..b71faf7c 100644
--- a/src/UserAction.js
+++ b/src/UserAction.js
@@ -224,7 +224,7 @@ export function InfoSidebar(props) {
                 </p>
                 <p>
                     T大树洞 网页版的诞生离不开&nbsp;
-                    <a href="https://github.com/pkuhelper-web/webhole" target="_blank" rel="noopener">P大树洞</a>
+                    <a href="https://github.com/pkuhelper-web/webhole" target="_blank" rel="noopener">P大树洞网页版 by @xmcp</a>
                     、
                     <a href="https://reactjs.org/" target="_blank" rel="noopener">React</a>
                     、