Shanghai bonsai is one of the excellent traditional arts of the Chinese nation and is a bonsai art school named after Shanghai. It contains literature and aesthetics, and integrates plant cultivation, plant morphology, plant physiology, garden art and plant modeling art, fully embodying the "green culture" of harmonious coexistence between man and nature. It is mainly distributed in Shanghai and its surrounding counties and cities. Shanghai is located in the delta area of the lower reaches of the Yangtze River, where the Yangtze River flows into the sea, and has convenient water and land transportation. The mild climate, distinct four seasons, and the characteristics of marine climate, superior natural conditions, and economic and cultural development are the main factors in the formation of the Shanghai bonsai school. According to research, Shanghai bonsai has a history of more than 400 years. It has gathered the strengths of many schools. On the basis of learning and studying the traditional bonsai art of my country, it has learned from nature, deliberately sought innovation, and gradually formed its own style, thus forming the Shanghai bonsai art. The characteristics of Shanghai bonsai modeling are free form, no rules, no program, and pay attention to natural painting, exquisite and vigorous, bright and smooth. The branches of Shanghai bonsai are natural and disc-shaped. Although some tree bonsai are disc-shaped, they are different from the clouds and cloud pieces of Su and Yang schools. They are mainly manifested in the various shapes, sizes, and large number of pieces. They are distributed naturally, with dense and scattered distribution, and pay attention to changes. Therefore, the form still tends to be natural. Shanghai bonsai also uses the ancient trees in various forms in nature as imitations, and refers to the branch painting method of Chinese landscape painting. It takes advantage of the situation and carries out artistic processing to give the works more natural state. Therefore, there is an effect of "although it is made by man, it seems to be opened by nature". Shanghai bonsai is one of the first schools in my country to use metal wire to process bonsai. After the metal wire is used to wrap the trunk and branches, it is bent and shaped. The pruning and tying method uses coarse tying and fine pruning, pruning and tying at the same time, which is easy to shape, smooth strips, and a combination of rigidity and softness. The modeling form of Shanghai bonsai is relatively natural and not restricted by any program, so its modeling forms are varied. There are mainly straight pole type, oblique pole type, curved pole type, waterside type, cliff type, dead branch type, root type, stone type, as well as multi-pole type, double pole type, combined planting type, jungle type, flower viewing and fruit viewing bonsai. In addition, there is a kind of "point stone type" bonsai, which combines the twisting of the trunk in the tree bonsai, and the exposed root system is matched with rocks to increase the interest of the mountains and fields. Sanlin Town was called Yunxi in ancient times, and the west of the town was called Yunxi. Pang's house is located in Yunxi Village. Local historical celebrities such as Pang Songzhou, Pang Shangda, and Pang Zhiyu in the late Qing Dynasty and the Republic of China all came from Pang's house in Yunxi Village. Yunyuan Tree and Stone Bonsai Garden is located here. The contemporary owner Pang Xieting, whose ancestors are from a family of traditional Chinese medicine for nine generations, makes and maintains bonsai as a hobby and studies bonsai art. There are more than a dozen ancient bonsai pots from the Yuan, Ming and Qing dynasties that have been passed down from ancestors. His ancestors named the family garden "Yun Garden". The garden preserves a black pine bonsai pot that is more than 100 years old, a boxwood, two crape myrtles, an ancient wintersweet, and other ancient trees handed down from ancestors to the present day, as well as a plaque with the words "Caiyunxuan" written by Zhang Xianghe, the Minister of Works, presented by the prefect of Songjiang Prefecture in the Qing Dynasty. "Yun Garden" has been successively awarded the "First Prize for Good Greening and Greening in Shanghai" and "Best Garden in Shanghai" by the Shanghai Municipal People's Government. The owner Pang Xieting uses the tree stump bonsai cultivation method handed down from the Pang family, combined with the Chinese landscape conception of the "Mustard Seed Garden Painting Manual" handed down from the Qing Dynasty and the Chinese stone appreciation culture, to inherit and innovate the Shanghai style bonsai technique.