When looking at Feng Shui, the Feng Shui master always has a big compass in his hand, measuring east and west, as if he is looking for something with the compass. Is the Feng Shui compass a tool for finding Feng Shui treasures? You can disassemble the compass used by the Feng Shui master and find that its internal structure is just a compass. If you pick up the compass and put it flat, under normal circumstances, the pointer always points to the north and south directions, but if it is not flat, or your hands are shaking, the compass pointer will keep swinging. Some Feng Shui masters are deliberately mysterious and want to put the compass on rice. It seems that the Feng Shui masters who do this are only average in their skills. In addition to the compass pointer shaking when it is not flat, if the compass loses magnetism; or if there are magnetic materials such as iron, cobalt, nickel and its alloys around it; or if it is affected by the earth's magnetic field, it will cause the compass pointer to be unstable or suddenly deflect in a certain direction. Friends can try it out. The direction of the compass needle will change depending on the distance between the compass and the wall of the building. This is why the compass is affected by the magnetic field.