In March 2008, villagers in Mingcun Town, pingdu city, Qingdao found a singing stone on the local Sanhe Mountain. Some of these stones can make the sound of running water, while others can make the sound of "tinkling". Many local people take these stones home as toys for their children. The villagers called this "singing stone" the "mother stone".

The shape of the mother stone is mostly like a small animal, and its voice is crisp and pleasant. The heaviest parent stone is over10000g, and the smallest is only the size of a fist. According to experts, the parent rock is probably a soil layer deposited for many years, or a igneous rock formed after volcanic eruption.