As a bit more context, Huawei recently announced they'll be sending orders for 14nm chips to SMIC's new fab instead of TSMC. 14 nm is about 3 gens behind TSMC's 5nm and was starting to be produced back in 2013.
To add to that, the Kirin 710A that will get produced by SMIC will presumably be very similar to the Kirin 710 from 2018, produced by TSMC with its 16nm/12nm process, so performance-wise this will probably be the same chip but from a different foundry - in mainland China.
