Shaanxi Zichang Zhongshan Grottoes, the national insurance unit, also known as Wanfoyan, Puji Temple, Dapuji Temple, Shigong Temple. Founded in the Taihe period of Jin (366-370 AD), it has been dug up over thousands of years through Tang, Song, Jin, Yuan, Ming and Qing. According to historical records, there are only five caves, which are all cultural relics at the national level. The third cave is the most complete, and there are more than 10,000 Buddha statues in the cave. Therefore, it is called Wanfoyan, built in Song Pingzhi four years (1067), the cave is magnificent, colorful, thousands of sculptures, thousands of shapes, lifelike. The relief Buddha statues are scattered and exquisite. Chinese and foreign scholars believe that its historical value and artistic value are not under Yungang Grottoes, Longmen Grottoes, Dunhuang Mogao Grottoes. The experts concluded that: "China's earliest grotto group", "rare grottoes in the world", "second Dunhuang".