The so-called Li Zhai refers to a house facing south and north. Because there are eight directions, there are eight types of houses with house hexagrams. In the past (including now), the direction of the door was used to determine good or bad luck. Therefore, it was necessary to match the house owner's life hexagram with the house hexagram to achieve the unity of the person and the house. Introduce Qi to attract wealth, and use the theory of restraint of the five elements to make your life healthy and harmonious.