There is a pit behind the feng shui layout house.

Due north is divination, five elements belong to water, and the main color is black, representing winter. The corresponding characters are men and the second son. The corresponding parts of human body are urinary system, kidney qi, complexion and immunity. There is a pit in the north of the house. First, the second child was injured, then the fourth child was injured, and then the old mother was injured. The second child is prone to uremia and death. It's easy to have a bad face if there are pits in the north.