When Baidu searches for a website, how is the introduction set up?

the following figure shows the content that appears when searching my personal website. Why is there only a loading? I have already set up keywords and description, why it doesn"t work?

my website is made of react and has been deployed for only two weeks. The template code is as follows:

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta id="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" name="viewport" />
    <meta name="theme-color" content="-sharp000000">
    <meta id="keywords" name="keywords" content="BiaoChenXuYing ">
    <meta id="description" name="description" content=" WEB ">
    <link rel="manifest" href="%PUBLIC_URL%/manifest.json">
    <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
    <link href="http://cdn.bootcss.com/highlight.js/8.0/styles/monokai_sublime.min.css" rel="stylesheet">
    <title id="title">BiaoChenXuYing </title>
  </head>
  <body>
    <div id="root"> 
      <!--  -->
      <div style="text-align: center; height: 300px; margin-top: 15%">
        <img src="./img/loading.svg" width="250" alt="..."> 
        <div> . . . loading . . . </div>
      </div> 
    </div>
  </body>
</html>

I also hope that the master who knows it can answer it. Thank you.