diff --git a/.travis.yml b/.travis.yml
index aa89264..b786ad0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,7 +11,8 @@ after_success:
   - git remote rm origin
   - git remote add origin https://thuhole:${GH_TOKEN}@github.com/thuhole/webhole.git
   - CI=false REACT_APP_BUILD_INFO=$(printf "Travis%s" "$(TZ=Asia/Shanghai date +"%y%m%d%H%M%S")") npm run build
-  - sed -i 's/\/\/cdn.jsdelivr.net\/gh\/thuhole\/webhole@gh-pages\/index.html/.\/index.html/g' build/*-* #额，这里用了个骚操作来修复Service Worker在Precache CDN内容的时候index.html返回content-type text/plain的问题
+  #额，这里用了个骚操作来修复Service Worker在Precache CDN内容的时候index.html返回content-type text/plain的问题
+  - sed -i 's/\/\/cdn.jsdelivr.net\/gh\/thuhole\/webhole@gh-pages\/index.html/.\/index.html/g' build/*-*
   - sed -i 's/\/\/cdn.jsdelivr.net\/gh\/thuhole\/webhole@gh-pages\/service-worker.js/.\/service-worker.js/g' build/*-*
   - sed -i 's/"\/\/cdn.jsdelivr.net\/gh\/thuhole\/webhole@gh-pages","\/service-worker.js"/".","\/service-worker.js"/' build/static/js/*.js
   - npm run deploy
diff --git a/public/static/bg/cyberpunk.jpg b/public/static/bg/cyberpunk.jpg
index d93a1fb..d7dbef9 100644
Binary files a/public/static/bg/cyberpunk.jpg and b/public/static/bg/cyberpunk.jpg differ
diff --git a/src/Config.js b/src/Config.js
index 233e5f6..f53024f 100644
--- a/src/Config.js
+++ b/src/Config.js
@@ -8,6 +8,7 @@ const BUILTIN_IMGS={
     'https://cdn.jsdelivr.net/gh/thuhole/webhole@gh-pages/static/bg/yurucamp.jpg': '露营天下第一',
     'https://cdn.jsdelivr.net/gh/thuhole/webhole@gh-pages/static/bg/minecraft.jpg': '麦恩·库拉夫特',
     'https://cdn.jsdelivr.net/gh/thuhole/webhole@gh-pages/static/bg/cyberpunk.jpg': '赛博城市',
+    'https://cdn.jsdelivr.net/gh/thuhole/webhole@gh-pages/static/bg/bj.jpg': '城市的星光',
     'https://cdn.jsdelivr.net/gh/thuhole/webhole@gh-pages/static/bg/sif.jpg': '梦开始的地方',
 };