Shanghai promoters Playful Warrior, helmed by Chaos Mind frontman Lao Gao, aka Sam Dust, have a new site at Douban.
The page's latest blog post is a list of Shanghai area bands who all identify themselves with -core in the genre. It's interesting and provides link to the pages of all the bands there. A couple of bands are not that active these days but it's worth a look.
Interesting aside. You'll note that Ero Or Hero's Chinese name actually means Mutton Demon and they list muttoncore as a genre. I've seen them twice and humour does not appear to be part of the act, so who knows.