Introduction to Woru niche: Woru niche was excavated in the Yuan Dynasty. There are three statues inside, one lying and two standing. The cave is square on the inside and round on the outside, located directly below the second cave. On the main wall of the grotto, there is a horizontal pedestal on which an old man without a crown lies on his side, resting on a long cylindrical pillow. On both sides of the old man, there was a waiter, standing respectfully with his hands held in his sleeves.