Introduction to the Grotto: Now there are only three relics here: Feiyu, Shuilian and Beiquan. Feiyu is the legendary East Palace. From Yuhua Palace, you enter the valley road eastward. When you reach the deep valley, there is a cliff dozens of feet high, with a waterfall pouring from it, like a raindrop. There are three stone chambers above, which can accommodate more than 100 people. There are caves connecting various grottoes.