Your local country, provided that it is not crazy. Then you are only accountable to one country's jurisdiction.
Hard to say. .cn is of course always strictly regulated: every website needs to be reviewed and registered with the police, and open its data to them. But we can also see that .uk from the supposedly "free west" is moving closer to this.
If you're in China or in the UK, this is already true for your business, whether you have the domain or not.
Register two domains in different jurisdictions, with neither serving its own jurisdiction, and a redirect for stray users.