The *duo* was a ceremonial vessel used in ancient times for military achievements, proclamation of government decrees, and could also serve as a musical instrument. According to the *Shuowen Jiezi*: "A large bell. In military law, five men form a *wu*, five *wu* form a *liang*, and the *liangshima* (commander of two *wu*) carries the *duo*." The *duo* flourished from the mid-Spring and Autumn period through the Han dynasty. Yixing pottery in the shape of Han *duo* began in the Qing dynasty. Mei Tiaoding once inscribed for the "Handuo Teapot": "Taking the *duo* of Han, to make the teapot of today. As clay replaces bronze, naturally it should be called a teapot." Gu Jingzhou's "Handuo Teapot" is made from purple clay (*zini*), with a fine, delicate body and elegant clay color. The body is narrow at the top and wide at the bottom, round like a bell, with a stable center of gravity. The columnar knob is decorated with raised ring lines in the middle, both simple and beautiful while convenient to grasp. The spout is short, straight, and angled upward, vigorous and powerful, with the mouth slightly curved downward in a drooping spiral shape, as if the full tea is about to pour forth. The ear-shaped handle is harmonious, stretched, and upright. The overall lines are smooth and concise with well-proportioned ratios; straight lines contain curves, and the transitions between lines and surfaces are proper and comfortable, breeding change within stability. The flat inset lid fits seamlessly with the rim, demonstrating rigorous craftsmanship that conforms to proper standards. The entire piece bears no decoration whatsoever, using the beauty of the bare clay body to interpret the most authentic charm of the pure purple clay "Handuo Teapot" form.