From Baihe District or on the plains nearby to look at Guanziling, you would get to see a mountain in a similar shape to a pillow. That is Mountain Zhentou (Pillow) with three visible striped remains possibly made from erosion by mining and raindrops; people hence call the remains "Three Dragons". Mountain Zhentou (Pillow) is thoroughly composed of limestone that is full of fossils of corals, shells and the like.