No and no.
China banning BTC mining is great news for everyone outside China. China had over 70% of all the global mining hash. (Due to electricity being cheap) As those miners relocate their operations, the global mining distribution is being more evenly distributed across the globe and is becoming far greener as a result, as most new setups are using 100% renewable power. (El Salvador is going to use geothermal volcano power to mine)
The recent drop in BTC price is likely partly fuelled by the Chinese miners offloading their mined BTC as they fear having it confiscated.
I have no idea why the Chinese ban on mining has created so much negative FUD. There is nothing negative about it, unless you’re a Chinese miner.
Governments creating their own digital versions of their fiat currencies makes zero difference to anything. They’ll just be stable coins linked to their own currency and backed by the same government. No effect on Bitcoin between owning Yuan or Digital-Yuan.