diff --git a/project/p0/src/App.css b/project/p0/src/App.css
deleted file mode 100644
index 74b5e0534..000000000
--- a/project/p0/src/App.css
+++ /dev/null
@@ -1,38 +0,0 @@
-.App {
-  text-align: center;
-}
-
-.App-logo {
-  height: 40vmin;
-  pointer-events: none;
-}
-
-@media (prefers-reduced-motion: no-preference) {
-  .App-logo {
-    animation: App-logo-spin infinite 20s linear;
-  }
-}
-
-.App-header {
-  background-color: #282c34;
-  min-height: 100vh;
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  justify-content: center;
-  font-size: calc(10px + 2vmin);
-  color: white;
-}
-
-.App-link {
-  color: #61dafb;
-}
-
-@keyframes App-logo-spin {
-  from {
-    transform: rotate(0deg);
-  }
-  to {
-    transform: rotate(360deg);
-  }
-}
diff --git a/project/p0/src/App.js b/project/p0/src/App.js
index 378457572..542a0090f 100644
--- a/project/p0/src/App.js
+++ b/project/p0/src/App.js
@@ -1,25 +1,12 @@
-import logo from './logo.svg';
-import './App.css';
+import React from 'react'
 
-function App() {
-  return (
-    <div className="App">
-      <header className="App-header">
-        <img src={logo} className="App-logo" alt="logo" />
-        <p>
-          Edit <code>src/App.js</code> and save to reload.
-        </p>
-        <a
-          className="App-link"
-          href="https://reactjs.org"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          Learn React
-        </a>
-      </header>
-    </div>
-  );
+class App extends React.Component{
+  render(h) {
+    return (
+      <div className="app">
+        <h1>chenxuan</h1>
+      </div>
+    )
+  }
 }
-
 export default App;
diff --git a/project/p0/src/index.js b/project/p0/src/index.js
index ef2edf8ea..a4f7042ed 100644
--- a/project/p0/src/index.js
+++ b/project/p0/src/index.js
@@ -10,8 +10,4 @@ ReactDOM.render(
   </React.StrictMode>,
   document.getElementById('root')
 );
-
-// If you want to start measuring performance in your app, pass a function
-// to log results (for example: reportWebVitals(console.log))
-// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
 reportWebVitals();
diff --git a/project/p1/read.text b/project/p1/read.text
index cfafb968d..0f406d626 100644
--- a/project/p1/read.text
+++ b/project/p1/read.text
@@ -15,4 +15,8 @@ npm run start
 npm i -g serve
 
 6、启动本地服务
-serve -s build
\ No newline at end of file
+serve -s build
+
+7、dangerouslySetInnerHTML
+8、ReactDom.findDOMNode
+9、refs
\ No newline at end of file
diff --git a/project/p1/src/App.js b/project/p1/src/App.js
index 4bbb50e0d..447906ca2 100644
--- a/project/p1/src/App.js
+++ b/project/p1/src/App.js
@@ -1,6 +1,6 @@
 import React from 'react';
 import ReactDom from 'react-dom';
-import HeaderComponent from './components/header/index'
+import HeaderComponent from './components/header/index';
 class App extends React.Component{
   componentDidMount(){
     // ref属性