From the abstract primitive spiral patterns of Neolithic painted pottery culture, to the solemn cloud and thunder patterns of the Shang and Zhou dynasties, and then to the cloud and vapor motifs with strong flowing movement in the Qin and Han periods, cloud patterns continuously evolved and transformed with the progression of society. From the Wei, Jin, Northern and Southern Dynasties through the Sui and Tang periods, the traditional flowing cloud and vapor patterns gradually evolved into cloud decorations with cloud heads as the primary element and cloud tails as secondary features. The relatively early periods of the Sixteen Kingdoms, Northern Wei, and Western Wei clearly bore the painting style of the Western Regions, while Sui dynasty Dunhuang murals already distinctly possessed the traditional painting style of the Han people. During this period, the "cloud shoulder pattern" appeared, decorating the shoulders of vessels. Song dynasty cloud patterns generally maintained the layered cloud style, but by the Yuan dynasty they gradually evolved into dense, curling cloud head patterns with multiple layers. The ruyi cloud pattern decoration on Yixing pottery was fully embodied in the rigorous and meticulous artistic style of the Qing dynasty. Representative works include the "Ruyi Cloud Pattern Square Han Pot" by the renowned craftsman Hua Fengxiang from the Kangxi reign period, and the "Imperial Poetry Pot" from the Qianlong period housed in the Shanghai Museum.[1] Gu Jingzhou innovatively applied cloud pattern decoration to the shoulder of his "Cloud Shoulder Ruyi Pot," paired with string patterns. This not only created a neat and flowing visual effect, but also gave the entire vessel a dignified and refined bearing. The body of the pot is decorated with... --- [1] Gu Jingzhou, ed., *Appreciation of Yixing Zisha Pottery* (Hong Kong: Joint Publishing (H.K.) Co., Ltd., January 1992), p. 73. [2] Ibid., p. 77.