You can get over 30 Valberries in this area.
You can purchase Valberries from Botanist Chloris. The refreshes every 3 days and the items don't change. oou can't see her at night.
Puzzles, Secrets, and Hidden Chests in Dragonspine
Puzzles, Secrets, and Hidden Chests in Liyue
ATK% VS Physical/Elemental DMG% in Genshin