First of all, we need to find the font material of Microsoft Yahei
Go to this directory to find the font package of Microsoft Yahei, copy and paste it under the unity project directory
How to go to the project directory, here is a very convenient way, open the project, right click in the project column to find the Show in Explorer option, click to go to the project directory
Paste it directly in Asset
Then go back to unity, you will find the following three things
Select the right button in the middle create->textmeshpro->fontasset
Then drag the generated font directly into the Font Asset in Text (TMP), so that Chinese can be displayed
