Shadowsocks used to be the thing that _really_ worked in CN. Not sure what's current there.
AWS ap-southeast-3 should still be up, and isn't in a different partition like CN, govcloud, iso etc. So a VM there and a vpc peer in the US should get you around a lot of stuff.
Shadowsocks isn't a viable method in 2025 it seems. Not by itself apparently.
Shadowsocks generates high-entropy noise via packet analysis, which typically is easy to spot out as it looks irregular.
AWS ap-southeast-3 should still be up, and isn't in a different partition like CN, govcloud, iso etc. So a VM there and a vpc peer in the US should get you around a lot of stuff.