diff --git a/public/index.html b/public/index.html
index 2cd49c2..93f5fc2 100644
--- a/public/index.html
+++ b/public/index.html
@@ -4,40 +4,32 @@
     <meta charset="utf-8" />
     <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
     <meta name="viewport" content="width=device-width, initial-scale=1,user-scalable=no" />
-    <meta name="theme-color" content="#000000" />
-    <meta
-      name="description"
-      content="Web site created using create-react-app"
-    />
-    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
-    <!--
-      manifest.json provides metadata used when your web app is installed on a
-      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
-    -->
     <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
-    <!--
-      Notice the use of %PUBLIC_URL% in the tags above.
-      It will be replaced with the URL of the `public` folder during the build.
-      Only files inside the `public` folder can be referenced from the HTML.
-
-      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
-      work correctly both with client-side routing and a non-root public URL.
-      Learn how to configure a non-root public URL by running `npm run build`.
-    -->
-    <title>React App</title>
+    <title>廓形仪</title>
   </head>
   <body>
     <noscript>You need to enable JavaScript to run this app.</noscript>
     <div id="root"></div>
-    <!--
-      This HTML file is a template.
-      If you open it directly in the browser, you will see an empty page.
-
-      You can add webfonts, meta tags, or analytics to this file.
-      The build step will place the bundled scripts into the <body> tag.
 
-      To begin the development, run `npm start` or `yarn start`.
-      To create a production bundle, use `npm run build` or `yarn build`.
-    -->
+    <script>
+      function setupWebViewJavascriptBridge(callback) {
+          if (window.WebViewJavascriptBridge) { return callback(WebViewJavascriptBridge); }
+          if (/android/i.test(navigator.userAgent)) {
+              document.addEventListener('WebViewJavascriptBridgeReady',function(){ callback(WebViewJavascriptBridge) },false);
+          }
+          else {
+              if (window.WVJBCallbacks) { return window.WVJBCallbacks.push(callback); }
+              window.WVJBCallbacks = [callback];
+              var WVJBIframe = document.createElement('iframe');
+              WVJBIframe.style.display = 'none';
+              WVJBIframe.src = 'https://__bridge_loaded__';
+              document.documentElement.appendChild(WVJBIframe);
+              setTimeout(function() { document.documentElement.removeChild(WVJBIframe) }, 0)
+          }
+      }
+      setupWebViewJavascriptBridge(function(bridge) {
+          window.bridge = bridge;
+      });
+      </script>
   </body>
 </html>
diff --git a/public/logo192.png b/public/logo192.png
deleted file mode 100644
index fc44b0a..0000000
Binary files a/public/logo192.png and /dev/null differ
diff --git a/public/logo512.png b/public/logo512.png
deleted file mode 100644
index a4e47a6..0000000
Binary files a/public/logo512.png and /dev/null differ
diff --git a/public/robots.txt b/public/robots.txt
deleted file mode 100644
index e9e57dc..0000000
--- a/public/robots.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-# https://www.robotstxt.org/robotstxt.html
-User-agent: *
-Disallow:
