Yin Zai Feng Shui, also known as Grave Feng Shui (阴宅风水), is the practice of Feng Shui applied to premises or areas for the non-living, such as graveyards or cemeteries. This type of Feng Shui is believed to affect the descendants of the deceased, influencing their fortune, health, and overall well-being. It is an essential aspect of traditional Chinese metaphysics, emphasising the importance of honouring ancestors and ensuring harmonious energy flow in burial sites.