Introduction to Lei Si Ju: Lei Si Ju is positioned according to the Lian Zhen Mars of the Beidou and is made of mahogany. It is divided into two floors, the upper floor is the living room, and the lower floor is the place for making and storing tools. The flowers and trees of bitter nature outside are grown, so it is suitable for people with discomfort in the heart, small intestine, tongue, and pulse, as well as diseases of the lungs, large intestine, nose, fur, worry, and irritability.