The Big Dipper Seven Star Array, also known as the Tiangang Sword Array, is arranged in the direction of the Big Dipper in the sky, and then combined with the change of yin and yang. These seven stars have names, which are Tianshu, Tianxuan, Tianji, Tianquan,

The Big Dipper Seven Star Array, also known as the Tiangang Sword Array, is arranged in the direction of the Big Dipper in the sky, and then combined with the change of yin and yang.

These seven stars have names, which are Tianshu, Tianxuan, Tianji, Tianquan, Yuheng, Kaiyang, and Yaoguang. One to four are Dou Kui, also called Xuan Ji; Five to six are bucket handles or jade hengs.

The pivot is the sky, Xuan is the earth, Ji is the man, Quan is the time, Yuheng is the sound, Kaiyang is the law, and Yaoguang is the star. Arranged in a bucket, the yin and yang become a array, just like the snake of Changshan, hitting the head and tail, hitting the tail and responding, hitting the head and tail, hitting the head and tail, and the last change, the pivot and the Xuan are combined, and the heaven and earth are connected, that is, the jade and stone are burning, and all disasters cannot be recovered.