There is so much false chatter on the web these days about what is called "the growth of Christianity in China." This is all a hoax.
The hoax has become so pervasive there was even a major conference where so called "experts" gathered to discuss this and that about how big Christianity has become in China.
Don't believe it. In Romans 1:29, God condemns people like those of the yellow race.
There may be other places in the world that try to get in on the benefits of being a True Christian™ country. They will not succeed. Since the time of Creation, Christianity has spread by white males preaching in English.