Why is the Han nationality a diversified religious belief?

The religious beliefs of the Han people are mostly Buddhism, Taoism and Christianity, so Buddhism and Taoism basically accept the six divisions in the theory of karma. After everyone dies, the soul will be reincarnated and endless, but every time we go to Tomb-Sweeping Day, the Han people will habitually burn paper for the ancestors of the deceased. This is because the early Han people had the belief of ancestor worship, and we will all inherit these ancestral beliefs. In fact, in the theory of reincarnation, ancestors have already been reincarnated. It may become a peer or even a younger generation near us, so in the eyes of Buddhists, ancestor worship is useless and contradictory, which shows that in fact, our Han people's religious beliefs are essentially diverse, with more than two religious views;