Introduction to Luban Cave: Luban Cave is the mountain gate of a temple in the Sui Dynasty. It is unknown because it is buried underground by soil all year round. After excavation in 1995, it was discovered that the cave was a stone building with a slope paved with stone slabs leading into the temple. On the stone walls on both sides of the passage cave, there are still remaining inscriptions from the early Tang to the Song and Ming dynasties, especially the remnants of the "Ode to and Preface to the Lingyan Temple Stele" written by Li Yong, a calligrapher of the Tang Dynasty, at the southern end of the cave. It can be said that it is a masterpiece of the Tang Dynasty. A treasure of modern art.