Thạch Tinh
Not independently attested as a distinct Vietnamese nature spirit. No source describes a 'Thạch Tinh,' a being living in rocks and boulders that is helpful or dangerous; searches surfaced the Sơn Tinh–Thủy Tinh legend of the Mountain God versus the Sea God and unrelated game lore, but no stone-spirit entity. The figure likely blends animist beliefs about stones with a misremembered name.