Introduction to Li Guyan: Li Guyan, also called Huanggu Rock, is a rare tourist attraction in China where the emperor's aunt became a monk. According to legend, it was built because Princess Changzhao, the sister of Emperor Taizong of the Tang Dynasty, worshiped Buddha here. The scenic spot is located in the shade of the original forest, with clouds hanging and smoke, the Buddha and the fragrance of the Buddha, and an antique atmosphere. It is a unique landscape of the Mianshan tourist area. Therefore, there is a saying among the Three Jin Dynasties that "Qianyou Rock, Wanyou Rock, and Li Guyan are the most beautiful."