Introduction to "Ghost Face Looking in the Mirror": In the section of the city wall on the north side of Qingliang Gate, there is a huge uneven stone in the natural rock wall. Because it resembles a ferocious ghost face, and because there is a brick wall around the "ghost face", it is commonly known as "Ghostface City". There is a pond in front of the stone wall, where you can see the reflection of ghost faces. It is called Mirror Pond. The famous scenic spot "Ghost Faces Looking in the Mirror" refers to this place in history.