A Feng Shui master refers to a person who specializes in looking at geographical situations such as residential sites and cemeteries. Among the people, Feng Shui is mostly called "Feng Shui", and those who practice this profession are called "Feng Shui Masters". Because Feng Shui Masters use the Yin and Yang theory to explain, and people think that they are people who deal with the Yin and Yang world, they are also called "Feng Shui Masters". This kind of people are called "Mr. Yin and Yang" (the Feng Shui masters in Longdong, Gansu and Shaanxi are called Yin and Yang). Now it specifically refers to people who specialize in looking at geographical situations such as residential sites and cemeteries. Belief in Feng Shui may not necessarily work, but disbelief may have the opposite effect.