Introduction to Yanyuan: Yanyuan is located in Xinfeng Lane, Gucheng District, Changshu City, Jiangsu Province. It was first built during the Qianlong period of the Qing Dynasty and has a history of more than 220 years. It is one of the famous classical gardens in the south of the Yangtze River and a cultural relic protection unit in Jiangsu Province. The "Yangu" yellow stone rockery in the garden is a masterpiece handed down from generation to generation by Ge Yuliang, a mountain master from Jinling (now Changzhou) in the Qing Dynasty, and is famous throughout the country.