Qianlong Xinggong Palace is the largest palace-style ancient building complex in the north of Qing Dynasty. After the restoration and expansion of the emperors of Yongzheng, Qianlong and Jiaqing dynasties, the northern palace complex now occupies 36 mu, surrounded by red walls, with three courtyards and nine closed courtyards was formed. Emperor Qianlong went to the south of the Yangtze River six times and stayed there five times. He built pavilions and built monuments and spent money to repair them. So he was also commonly called Qianlong Xinggong. In 1983, in order to protect this precious cultural heritage, the Jiangsu Provincial People's Government announced it as a provincial cultural relic protection unit. In June 2001, it was announced by the State Council as a national key cultural relics protection unit, which is worth visiting and studying.