#feng shui

Turtleback tomb 龟壳墓 are a particular type of Chinese tombs originating from the Song Dynasty. They are commonly found in some coastal regions of southern China (Zhejiang, Fujian, Guangdong) and the Ryukyu islands.

It is commonly said that the tomb imitates the shape of a tortoise due to those animals' longevity, thus promising long life to the descendants of the deceased. Some authors link it with the general symbolism of a turtle in the ancient Chinese culture, with its flat plastron below and its domed carapace above, representing the shape of the universe.

The main purpose of the omega-shaped ridge surrounding the tomb is to substitute for a range of hill ridges which, according to the principles of feng shui, need to protect the grave from the "noxious winds" from the three sides. The Ryukyuan version has the same overall shape and layout, but on a much greater scale. The body of the "tortoise" serves as a family burial vault.