Is crypto illegal in China?

Excuse me, I am quite curious about the legal status of cryptocurrencies in China. I understand that China has been actively exploring and developing blockchain technology, but I'm not sure about the regulations on cryptocurrencies. Is the use, trading, and mining of cryptocurrencies considered illegal in China? If so, what are the specific legal provisions or policies that prohibit these activities? And are there any exceptions or specific scenarios where cryptocurrencies are allowed? Thank you for your help.