Qinling's Secret Treasures: the Sound of Silent Skeletons

In the hinterland of the Qinling Mountains, there are thousands of mountains and valleys, and the clouds and mist persist all year round, breathing out the ancient breath like huge green lungs. There are more secrets buried here than there are trees on the ground. The one Feng Jiu is looking for is said to be hidden at the end of an underground river called "Ghost Sees Sorrow" that even the county magistrate doesn't mention.