This formula is very important in Feng Shui, it is practiced in the living room and the garden and is used to identify the missing sectors of a land or a plan of a house.
The Ba Gua octagon represents the 8 cardinal directions, each of which represents a sector of life to be treated according to the 5 elements. This work helps to improve human relationships (couple, family, friends).
In the same way, this formula is reputed to improve health, knowledge and spirituality, and on a professional level, it acts on career, fame and abundance.