Construction of the Qingtian Ancient City Wall began in 1556, the 35th year of the Jiajing reign of the Ming Dynasty, under the supervision of County Magistrate Xiong Ying, to resist the Japanese invasion. Backed by Taihe Mountain and facing the Oujiang River, the ancient city boasts a circumference of 3,308 meters and features battlements, forts, and a moat. Initially, it had four gates: East Longjin, South Qingxi, West Jinping, and North Danshan. Additional gates were later added. Floods and urban construction destroyed portions of the wall, leaving only a 983-meter-long section facing the river in the south, including six water gates (from west to east: Dengying, Tongjin, Zhongfang, Qingxi, Shizhu, and Xingchun). All six gates along the Oujiang River remain. It is considered the most complete surviving riverside wharf wall in Zhejiang Province. In 1987, it was designated a Qingtian County Cultural Relics Protection Site and continues to function as a flood control structure. It is the largest surviving ancient structure in Qingtian.
In April 25th year, I visited Qingtian, following the illustrations and text from the Canglang Workshop, and located the six water gates. Although it's not easy to find, you can search for the six city gates such as Zhongfangmen on the navigation or ask the locals (not everyone knows them). I personally think it's still very interesting.