Introduction to Yanxia Cave: There is a couplet in "Nostalgia for the Ancients in Xishan Yanxia Cave" that says, "The high eaves cover the green, and the wild paths cover the floating smoke. White cranes are frequent guests, and Confucian scholars are immortals." Due to the rainy weather, the cave There is often mist and mist that sprays out and fills the mountains, hence the name.