Zhenwu Emperor, also known as Xuantian God, Xuanwu Emperor, Yousheng Zhenjun Xuantian God, and Insufficient Patriarch, is the full name of Zhenwu Dangmo Emperor. He is the northern god in Han myths and legends, and is the famous Yujing Zun God among Taoist immortals. At present, the main god enshrined in Wudang Mountain in Hubei Province is Emperor Zhenwu, who is called "Zhen Zhen Zhen Zhen Zhen Wu Ling Ying You Sheng Emperor" in the Dao Jing, and is referred to as "Zhenwu Emperor" for short ". Han folk called the Lord of the Demon, the Patriarch of Reporation, and the Patriarch of the Hair. After the Ming Dynasty, it had a great influence on the whole country, and the folk beliefs Han modern China were particularly common.