The first is language. Use Ctrl+shift+P to open the search command bar, then search for configure display language, install Chinese simplified.
There is also a plug-in that is easy to use. You can open the webpage directly in the compiler to debug, called live server, you need to click on the extension tool on the left sidebar and search. After installation, click the gear icon, click Configure extension settings, click this to set the default browser. It 
should be noted that you must open a whole file with vscode before you can open the webpage with this plugin, right click open with live server in the html file That's it