How hard it's to be a Christian in China. What are the restriction?

Jedi - this is a very difficult question to answer, you will get almost every kind of answer from - we have total freedom to we are totally repressed and have not freedom. There is a lot of information, documented, on the Internet, it is probably the better place to research and ask this kind of question

There are no restrictions, you can go to churches anytime you want to.

My aunt is Catholic, and no one bothered her really.

There is really no restriction unless you begin to gather large crowds. Then, who knows? Now, China wants to encourage religions so you are more free than ever before.

it's no problem being a Christian in China. It's nearly the same then outside of China.

Just the bible is a little different. In the Chinese version the world was created by the communist party.