Screenshot by Pro Game Guides Hidden Civilizations is a Genshin Impact web event taking place on HoYoLAB from September 29, 2022, to October 31, 2022. Your goal is to participate in various HoYoLAB community tasks to obtain Copper Coins, which can then be used to redeem rewards (including Primogems!) ...
View more: Genshin Impact Hidden Civilizations HoYoLAB web event guide