Introduction to Wolong Valley: Wolong Valley is located in the middle of the west bank of Longtan Lake, sandwiched between cliffs and rocks on both sides. The valley has overhanging vines and is full of primitive wild charm. There are four "dragons" in Wolong Valley, which were carved by Mr. Zhou Wu, a stone carving craftsman and younger brother of Mr. Zhou Haoran, a famous Chinese calligrapher and local native, based on the legend of Wolong Valley and the natural shape of the cliff stones. The three big characters "Wolonggou" like silver hooks on the rock wall at the mouth of the ditch were written by Mr. Zhou Haoran.