Jianzhan, a specialty of Jianyang District, Nanping City, Fujian Province, is a national geographical indication product of China. Jianzhan has a large mouth and a small bottom, some of which are shaped like funnels; And most of them are circular feet with shallow circles, and the root of the foot often has a trimming knife (commonly known as a chamfer), and the sole of the foot is slightly outward sloping; A few are solid feet (mainly small round bowls). The design is simple and robust, with a generally heavy feel. Jianzhan is divided into four categories: open mouth, skimming mouth, converging mouth, and bundling mouth, each of which is divided into large, medium, an