Sizhou Stone Inkstone is named after Sizhou, the ancient name of Cengong County. Sizhou Stone Inkstone was called Manxi Inkstone in ancient times, also known as "Jinxing Stone Inkstone" and "Heiduan". The Qing Dynasty's "Ruixi Inkstone History Collection, Miscellaneous Products Chongduan" records: Ouyang Yongshu's Inkstone Catalogue says, "Huguang Chenyuanzhou (actually Sizhou) has a kind of black stone, which is dark black in color, rough in texture, or has small eyes. The Duan people bring it back and carve it into the shape of Duan and call it "Heiduan". The material of Sizhou inkstone comes from "Xingshitan", one of the eight scenic spots in Cengong County. This pond is seven miles away from Cengong County. It is extremely difficult to get inkstone materials from "Xingshitan". Those who get inkstone materials must have the skills of underwater dragons and the skills of supernatural craftsmanship. It is difficult to get stone, and it is also difficult to carve inkstones from stone. It takes more than 20 processes to make an inkstone from stone, and it takes more than ten days. Whether it is knocking, carving, engraving, or polishing, it all depends on the hands' work. The processes are closely linked, and if you are not careful, it will be destroyed. The calligrapher Wang Xizhi, the great writer Su Dongpo, Emperor Kangxi of the Qing Dynasty, Premier Zhou Enlai, Princess Sirindhorn of Thailand, etc. all have a special liking for Sizhou inkstones. They use them to write eternal chapters and pass on their reputations. The real Sizhou stone inkstone is extremely precious. Sizhou stone inkstone has high historical, cultural, practical, ornamental and collection value. On May 24, 2021, it was approved by the State Council to be included in the fifth batch of national intangible cultural heritage representative expansion project list.