What is the meaning of Sangmen in fortune telling?

The sangnan in fortune telling refers to the twelve evil spirits of the fleeting time;

Tai sui, Sun, Sangmen, Taiyin, Five Ghosts, Small Consumption, Great Consumption, Purple Micro, White Tiger, Fuxing, Traveler and Sick Symbol are all twelve stars.

Inference: first find out the life palace from the eight characters, and then from the beginning of the life palace to the end of the fleeting time, the evil spirits encountered are the evil spirits of the fleeting time.