This feng shui compass is different from a regular compass. It not only serves as a directional indicator, but also a very practical feng shui instrument. Chinese ancient feng shui masters used it to measure distance and time, and it holds a very important position in feng shui academia. The compass is an ancient compass, one of the the Four Great Inventions in ancient China, also known as the celestial pivot and the earth pivot. The Book of Rites of Zhou states: "The cardinal axis of heaven, earth, and human beings is connected with heaven and earth to form a section, in order to determine the correctness of the four seasons." This indicates that the compass at that time already had knowledge in astronomy, geography, and other fields, and had high scientific and artistic value. Before moving into a new house, a compass can be used to gather prosperity, popularity, and wealth. Usage: A large compass with built-in grains or rice is placed in the center of the house or living room, and then the compass is lightly placed on top of the grains or rice. The four corners of the outer compass align with the direction of the four corners of the house or living room, and the inner compass is rotated to align the pointers to the north and south. This method not only helps to stabilize and secure the house, but also to attract people and gather wealth for the new house.