Introduction to Tongjin Bridge: Tongjin Bridge is located in the center of Nanxun Town in the past and is the intersection of the cross-shaped water system. During the Ming and Qing Dynasties, the bank of Tongjin Bridge became a prosperous silk market. There is a small street south of the bridge called Si Xingduo, which is famous for its silk industry and was the distribution center of "Jili Lake Silk" in history.