The Hygon C86 is essentially an AMD EPYC Zen 1 chip with an additional cryptographic layer added by the Chinese joint venture company collaborating with AMD. The chip was manufactured by GlobalFoundries as a proof-of-concept, and future Hygon CPUs will most likely be manufactured through other foundries like TSMC.
https://www.notebookcheck.net/AMD-EPYC-CPU-clone-Hygon-C86-developed-in-China-is-best-suited-for-cryptographic-loads.440192.0.html