I translated all game name to Simplified Chinese already.
How to apply in PlayStrategy?

You can.👍

Hi @XBLAAAAA

We haven't fully setup our translation process (similar to lichess). So at the moment the only way to provide translations is if you are technically minded you can create a Pull Request against lila (github.com/Mind-Sports-Games/lila), changing the appropriate files in the 'translation' directory.

When we sort out a proper translation contribution system we will be sure to let all users know. I'm not sure when this will happen, but it is on our list of things to do.