Introduction to Xuande Gate: Xuande Gate is located at the east end of Fengqing Street in the Prime Minister's Mansion. It is one of the five major gates in the ancient city of Yanguan. It was first built in the 13th year of Daye of the Sui Dynasty (617 AD). After repairs, Emperor Qianlong Six trips to Jiangnan and four stations in Haining passed through this gate.