The “Shuangjiang Duiwo” built by Shuangjiang Cultural Tourism Development Co., Ltd. of Tongnan District, Chongqing City, China consists of three parts: the pestle nest, the pestle cone, and the handling frame. The length of the pestle is 2.15 m and the height is 1.8 m. The inner is 1.61 m in diameter. After an on-site measurement by the official staff of the World Record Certification Agency, it has been recognized as “The largest hollowed out pestle in the world”.