Lyney & Lynette can be seen in the Mihoyo official Genshin trailer, and expected to be appearing in Act IV, Masquerade of the Guilty in Fontaine region.
Puzzles, Secrets, and Hidden Chests in Liyue
Lisa
Liyue Side Quests, Guides, and Locations
Xinyan
How to Farm Weapon Ascension Materials
Prototype Archaic
Lithic Spear