Precious Chest at Guyun Stone Forest : r/GenshinImpactTips
Burried Chest at Guyun Stone Forest (Free 7 Primogems) Genshin Impact | HoYoLAB
Found a secret exquisite chest in Guyun Stone Forest. Destroy all the Hilichurl totems in this hut : r/Genshin_Impact
In case you missed this, there's a Precious chest just on top of two boats and huge stone but break the piling stones on top first for it to appear(Guyun Stone Forest) :