To all of you who have bought Chinese ASICs, how have they been?

as we all know to get anything good and modern for nvidia/amd if you are lucky u can give up your kidneys as a down payment, but the chinese accelerators have a huge value proposition, if ur willing to invest the time and tokens porting frameworks to them. To whoever owns them, was it worth it, and if they weren't a complete dumpster fire, where can I get them?