Wondering why loongArch, other than evolving from the mips past, and using independence as the reason. They already have developed the CPU uArch, which is their own, and risc-v being open source would have covered for their path towards technology independence. So I don’t quite agree with the reasons provided. To me it looks more like trying to keep their mips legacy stuff working, rather than adopting risc-v…

Included on the OP’s shared URL: https://www.cnx-software.com/2021/04/17/loongson-loongarch-cpu-instruction-set-architecture