Li guyan, also known as huanggu yan, is a rare domestic because of huanggu monks tour resort. Now there are still preserved here in the qing dynasty shunzhi seventeen years of jiexiu liangzhongyu "li gu yan ji" containing: "the rock of mianshan famous li gu yan. According to legend, in the fifteenth year of zhenguan (641), princess changzhao, younger sister of emperor taizong of the tang dynasty, followed the Buddha to tie up the temple, burned and repaired for years, and then climbed to the foot of the river.
Li gu rock is located in the west side of the dragon ridge, is a length of more than 200 meters, 20 meters deep, 30 meters high natural giant cave, temple is divided into two layers. Built on the mountain, distinctive. Among them temple temple huanggu temple, sakya temple, guan di temple, the dragon king temple, luohan hall, three body temple and other places of interest.
The nine statues in the hall, all relics of the tang dynasty, are very precious. Huanggu building is the place where li gu practiced meditation in those days. Its Settings and murals reproduce the style of the royal family of the tang dynasty. The origin of the other halls are related to li gu, passing on many touching legends.