So not Shaolin KungFu, because a Buddhist monk from India taught them. Not TaiChiQuan, because the creator of the martial art, Zhang SanFeng first trained at Shaolin. And what about Shuai Jiao? Was it created by China only? Or did they see any other combat first and they decided to create a martial art similar to it?
traditionally shui jiao was chinese from my knowledge.
but honestly who knows there are at least 8 different types of modern shui jiao and who knows about archaic ones just like the different types of buddhism you have chan which is chinese and zen which is japanese an dozens of other types.
eastern religions isn’t set in stone to say (no pun intended lol) and to according to genghis khan who ruled china and influenced it religion is a personal thing and everyone has a different one like they have a different personality.
this is the same with martial arts.