Functions and Taboos of Infernal Affairs between Rural Master House and Compensation Room

First of all, I don't watch Feng Shui. I only said what I know: the first function of the underpass is to think about the lighting problem of the room opposite the main room and the supporting room. If there is no underground passage, the light in that room will be dim. Supporting houses are generally shorter than the main houses, and underground passages only play a transitional role. From the outside, the height is strewn at random, and there is a sense of hierarchy visually. There is also a saying in our countryside that the water dripping from the eaves of the main house can't reach the matching room, commonly known as tears, and the underground passage solves this taboo well. Many places like to build stairs leading to the main house in the reserved underpass, and the space is just right.