Kao Ni La Zhanshen Xitong

we love a self-aware anime / donghua
in this list are some shows that break the fourth wall and reference other anime
(these are only ones that i have watched im sure there are others)

Main character is either OP from the get go or becomes OP as the series progresses (Will mention if it's the latter)

1. No animes where MC is OP but we don't get enough action (EX: I've been killing slimes for 300 years and Problem Children Are Coming from Another World, Aren't They?)

Collection of all 2D Fantasy Donghua (only the first season entry)

Speaks for itself, but it can contain chinese folklore or chinese historical elements, like spirits and dynasties