How Visual Studio Code supports Chinese

This is actually the coding problem and font what does not matter, in the Vscode by default is the UTF-8 encoding way to open the file, as long as your file is this encoding can open normally
If not, do not set Vscode is not automatically switched on encoding mode open
    Manual can reopen with Encoding/save with encoding  Select Open
You can also modify the settings to automatically toggle them on:
Open File->preferences->usersettings
In the right Settings.json, add the following:
"Files.encoding": "ShiftJIS",
"Files.encoding": "EUCJP",
"Files.encoding": "Big5hkscs",
"Files.encoding": "Big5",
"Files.encoding": "GB18030",
"Files.encoding": "GBK",
"files.encoding": "UTF8",
"Files.encoding": "GB2312",
...

How Visual Studio Code supports Chinese