Sorry, I just went to ask my Chinese friend.
The news I got was that China did not ban bitcoin transactions.
It's just tougher regulation.
I also don't see any news that exchanges stopped trading bitcoins.
the transaction did not stop, but some of the exchange sites were closed by the government. but people can still trade with bitcoin.
if the reason is the same as the government of another country, then the reason is that bitcoin is potentially a scam, because of its irregular price.