The plaque hanging on the door of the Zixiao Hall, inscribed with the words "The First Judgment for Six Days", was created by a local official in the middle and late Qing Dynasty. It has various interpretations and is a praise and evaluation of Wudang Mountain, the True Wu Emperor, and the realm of cultivation. According to Taoism, the Great Emperor of the North Pole and the five Great Emperors of the east, west, south, north and center together constitute six days. The Great Emperor of the North Pole is known as the Heavenly Emperor. The others are the Blue Emperor of the East, the Red Emperor of the South, the White Emperor of the West, the Black Emperor of the North, and the Yellow Emperor of the Central Earth. Together, they are called the Six Heavens. According to the Taoist scriptures, "The six-day practice of the Tao leads to the enlightenment of all phenomena." This means that the birth and death of all things depend entirely on the six-day practice of the Tao, and this is the place where the six days are initially distinguished. In addition, in the theory of Taoist cultivation and refinement, there is also the concept of "the Six Days of the Three Realms", and the name "The Six Days of the Desire Realm" is listed. They are the inevitable processes of cultivation and refinement. According to the legend of Wudang, after Zhenwu ascended to heaven, in the other world - the celestial realm, demons and monsters rose up one after another, fighting and tearing each other apart. When the Primordial Heavenly Lord was preaching in the Heavenly Palace, the black poison, blood, light and foul air all rushed into the South Heaven Gate. In a fit of rage, the Primordial Heavenly Lord ordered Zhenwu to subdue demons and eliminate evil spirits. With his bravery, Zhenwu led 300,000 celestial soldiers and generals to subdue the demons overnight. The phrase "Six days of initial sentence" was an evaluation of his performance on that expedition.