Two Chinese teams claim to have reached primacy with quantum computers

https://phys.org/news/2021-10-chinese-teams-primacy-quantum.html

"quantum primacy is the performance of calculations that are not feasible on conventional computers... thus far have been met with skepticism... In this new effort, both teams are claiming... no room for doubt... In the first effort... The researchers claim their machine was capable of sampling the output 1023 times as fast as a supercomputer... The second effort... researchers found the machine capable of estimating sample calculations up to 1000 times as fast as the best supercomputers"