I wouldn’t waste time worrying about the Chinese, they seem to live outside the bounds of legality, mostly. I would just move on.
(huge companies like BMW, Mercedes tried to sue them for copying their cars, Chinese just responded with those cars look nothing like yours and that was the end of it. They write & interpret their own laws it seems)
(disclaimer: information was derived from information from multiple media sources and in no way should reflect mine or UE/Epic’s opinions on or the Chinese people)
And at least it might be contributing to the community, maybe in a strange, unorthodox manner, but you are still helping UE users, because what else could someone use it for but for Unreal Engine.
don’t give up, I really like your work & what you are trying to do. good luck as you move on into the future.