Thank you but I tried it and my game language is still not translated, can you check for me, ty!If you don't know how to edit the screens file, you can always use the other method. See this post. Just download that file, and change language there to "mylang", which is the name of your directory in game/tl folder.
PS: I put the file zzz.rpy in the folder Dream of Desire / game, then I edit the zzz file to: config.language = "vi" ("vi" is the translated folder name in Dream of Desire / game / tl). Can you edit the Screen.rpy file for me. ty!