Jianzhan, a specialty of Jianyang District, Nanping City, Fujian Province, is a national geographical indication product of China.

Jian Jian mostly for the mouth outsole small, some shaped like funnel; And most of the ring foot and ring foot is shallow, the foot root often has a repair knife (commonly known as chamfering), the bottom of the foot slightly oblique; A few are solid (mainly small round bowl class). The shape is simple and thick, the feel is generally heavy. It can be divided into four categories: open mouth, skimming mouth, gathering mouth and bunching mouth, and each category is divided into large, medium and small. Small round bowls belong to the small bowl. Open bowl: The mouth is turned outward, the lip is pointed round, the abdominal wall is oblique or slightly arched, the abdomen is shallow, and the abdomen is adducted. Shallow circle foot. Shaped like a funnel, commonly known as "bamboo hat bowl".

In December 2016, the former General Administration of Quality Supervision, Inspection and Quarantine approved the implementation of geographical indication product protection for Jianzhan.
The reason why Jian Jian has become the main line of Japanese tea ceremony culture is related to the flourishing of Zen culture in Japan. In the Southern Song Dynasty and even in the Mongolian Yuan Dynasty, Chinese Zen monks went to Japan one after another. They brought with them systematic Zen culture, as well as a large number of books, paintings and ceramics.

Chinese Zen aesthetics attracted the admiration of the Japanese, and even directly influenced the thoughts, culture and art after the Kamakura period.