https://www.techpowerup.com/245846/c...n-architecture

Chinese chipmaker Hygon began mass-producing its first x86 processors codenamed "Dhyana" based on AMD's "Zen" micro-architecture. The processor is the fruition of a deal AMD entered with a Chinese state-owned company back in mid-2016. As part of this deal, a company called Haiguang Microelectronics Company (HMC), in which AMD has a 51 percent stake, would license the "Zen" architecture to another company called Hygon (Chengdu Haiguang Integrated Circuit Design Co.), in which AMD owns a 30 percent stake. Hygon would then design "Dhyana," and a third entity (likely TSMC or some other Chinese foundry), would contract-manufacture the chip.