Qiandeng, originally known as "Qiandun", originated from Wuyue Hegemony Competition, belongs to Kunshan City, covering 84 square kilometers. It is located in the Yangtze River Delta, 30 kilometers away from Shanghai Hongqiao Airport, 35 kilometers west of Suzhou, and more than 2500 years ago. It is the hometown of Gu Yanwu, a famous patriotic scholar, and the birthplace of Kunqu. On February 28, 2018, Suzhou took the lead, including Qiandang, an ancient town. A total of 14 ancient towns in Jiangsu and Zhejiang jointly declared world cultural heritage.