Many people are concerned about legal issues. Old players who have experienced the bull and bear markets in the cryptocurrency circle tell you:
1. In China, $BTC is not legal tender. Individuals are free to buy and sell (including deposits and withdrawals) and it is not illegal. But don't speculate on exchange rates through U or recruit people
2. Carrying out cryptocurrency-related businesses, including opening exchanges, issuing coins, and conducting OTC, is illegal
Note that there are differences in cognition in domestic regions, and there will be deviations in law enforcement.
Do it with confidence.