It is the virtual name of the Sui God in ancient Chinese alchemy.
Fortune tellers say that leopard tail is in folklore. Leopard tail is the underworld commander who manages the souls of beasts. Together with beak, fish gills and wasps, they are also called the four great underworld commanders, and the four underworld commanders manage them separately. The spirits of beasts on the road, birds in the sky, fish in the water, insects on the ground, and other animals everywhere. This is just a myth made up by the people. Leopard tail is originally the virtual name of the god of the year in ancient Chinese alchemy. It is an evil god, the so-called tiger and the brave elephant, the vanguard general, and often faces the yellow banner of the god of the year. Xie Ji Bian Fang Shu quoted from the Qian Kun Booklet as a leopard-tailed person. In the place where he lives, he is not allowed to marry, keep slaves and maidservants, raise livestock, or build buildings. Offenders will destroy property and damage small mouths. The leopard's tail is the same as the evil god hanging a guest, mourning gate, etc., and the place where it is located should be avoided.