According to Tianjin local treasure, the Jizhou Comprehensive Law Enforcement Brigade has centralized rectification of mobile vendors in Zhouhewan area, so it is not allowed to be supervised by urban management. Jizhou District, which belongs to Tianjin, is a thousand-year-old county. It is located in the northernmost part of Tianjin, bordering zunhua city and yutian county in the east and sanhe city in Hebei Province in the west.