Yunkong Mountain Temple Fair, also known as "Yunkong Zen Temple Fair", began in the Eastern Han Dynasty. It is a folk mass activity and folk cultural activity with local folk beliefs as the main content. It is one of the famous temple fairs in the eastern part of Guanzhong. It carries a large number of local folk customs and has been valued by the local people. At the same time, it also preserves the local traditional culture with folk beliefs as the characteristics of the eastern part of Guanzhong, especially Huaxian and its surrounding areas. It is an important basis for studying the worldview and living conditions of the people in the eastern part of Guanzhong, and plays an irreplaceable role in folklore research. Yunkong Zen Temple is located at the northern foot of Yunkong Mountain, 3 kilometers southwest of Daming Township Government, Huaxian County, Shaanxi Province. Formerly known as "Yunji Temple". The temple was built in the Han Dynasty. It is famous for its "hanging coffins", and its unique geographical environment makes it have strong local characteristics. The person buried in the coffin is Master Puqian, who was the fourth prince of Emperor Chongzhen before he became a monk and raised troops in Huaxian to resist the Qing Dynasty. In order to arouse the people's support for the Ming Dynasty, he first built temples in the surrounding area to protect himself. In a short period of time, he built temples such as Xingguo Temple, Huguo Temple, Lanruo Temple, etc. At the same time, he also named the villages around his residence Daming, Chongning, and Chong'an. Subsequently, village names such as Zhuzhang, Nanwang, and Zhongwang were derived. Later, because there was no hope of restoring the country, he became a monk in Yunji Temple on March 17, 1674, and his Dharma name was Puqian. Since the fourth prince (Master Puqian) went to the temple to become a monk and practice, "Phoenix Mountain" was changed to "Yunkong Mountain" and "Yunji Temple", and later to "Yunkong Zen Temple". Because of his vow of "not being a Qing official in life and not touching Qing soil in death", Master Puqian was buried with a "hanging coffin" after his death. In order to commemorate Master Puqian, later generations gathered in Yunkong Zen Temple on March 17 every year to fulfill their vows. Over time, today's Yunkong Mountain Temple Fair was formed.