Bilibili Manhua (哔哩哔哩漫画): webcomic site adjacent to the Bilibili video platform https://manga.bilibili.com/
Qidian (起点): webnovels https://qidian.com/
Zhanse Nileyuan (战色逆乐园): discussion forum attached to another webnovel site with female-skewing readership, maybe slightly similar to r/twoXchromosomes https://bbs.jjwxc.net/board.php?board=20&page=1
SegmentFault: StackOverflow-like https://segmentfault.com/questions
V2EX: the closest thing to HN, except more like a traditional forum https://v2ex.com/