The first-class building of ancient buildings is located in the ancient city of Liaocheng. According to relevant public information, the first-class building of ancient buildings is located 30 meters west of the north gate of Liaocheng ancient city, and the reconstruction of the first-class building is a fusion of the buildings in the south of the Yangtze River in the Ming Dynasty. "Classic Records of Historical and Cultural Dining in Liaocheng Ancient City" shows that in the 16th, 22nd, 27th, 30th, 45th and 49th years of Qianlong's reign, Emperor Qianlong toured the south of the Yangtze River and visited famous shops in the first floor window when passing by Dongchang.