First thing to do would be to post in the Owners' Thread for this projector, if there is one. Someone there can walk you through the menus as the pages and selections are likely in the same order regardless of language.
Failing that, find someone on social media who speaks Chinese and set up a Zoom call so he or she can read your screen and walk you through it.
Even better if your circle of friends knows someone. Invite 'em over to help and buy 'em dinner, afterward.
I added the make and model to the title. The more specific the title, the better the odds of catching the right eyes.
Doc