https://pestproductions.bandcamp.com/album/gu-yan-album
Still a black metal band but not really a "tech/extreme" type band. Has more in common with post metal due to the chinese folk elements. This is a VERY beautiful album that I believe deserves your attention.
https://www.facebook.com/Zuriaake/
Members: Bloodsea.. Bloodfire.. Deadsphere
I can't seem to find any obvious bio information. They are from Ji'nan, Shandong Province. They've been an active band from 1998. This is a rare progressive chinese black metal group that mixes traditional folk elements, atmospheric black metal, and according to a Chinese friend, speaks in a very old dialect that isn't used anymore.