Introduction to Huilongtan: Huilongtan was built in the 16th year of Wanli in the Ming Dynasty (1588). Therefore, from north to south, five rivers, Hengli River, Xinqu, Yenujing, Tangjiabang and Nanyangshubang, intersect. , like five long dragons stretching out, Yingkui Mountain is located in the pool, embraced by green water, like a bright pearl. Since ancient times, it has been known as the five dragons grabbing the pearl, so it is named Huilongtan. There are many historical and cultural relics in the park, including stone pavilions, stone towers, stone peaks and other cultural relics from the Song, Yuan, Ming and Qing dynasties; and eleven ancient and famous trees that are over a hundred years old. Huilongtan has become one of the five major classical gardens in Shanghai.