This guide is work in progress. You can also see the Genshin interactive map on mihoyo official site.
Puzzles, Secrets, and Hidden Chests in Liyue
Hu Tao
Puzzles, Secrets, and Hidden Chests in Dragonspine
How to make & link your MiHoYo account
Top Mining Spots
Purchaseable Cooked Food and Materials Quest Guide
Wind's Grand Ode