Compass (compass) is a tool for feng shui detection, and it is also a common operating tool for managing style. It is mainly composed of a magnetic needle and a series of concentric circles located in the center of the disk, and each circle represents the ancient people's understanding of a certain level in the universe system in China.
The ancients in China believed that the aura of human beings was controlled by the aura of the universe, so they put all levels of information in the universe, such as the stars in the sky, everything represented by the five actions on the earth, heavenly stems and earthly branches and so on, on the compass by experience. The coordination of the orientation and spacing of each layer on the compass also implies the law of "magnetic field"