The intersection of Fudong 1st Street and Pannan Road. According to a query from Zibo, Tang Zheng soy sauce is produced by Zibo Tang Zheng Brewing Co., Ltd., and Zhangdian sells Tang Zheng soy sauce at the intersection of Shifu Dongyi Street and Pannan Road in Zhangdian District. Zhangdian District, under the jurisdiction of Zibo City, Shandong Province, is located in the middle of Zibo City, and the terrain gradually slows down from south to north, belonging to a warm temperate monsoon semi-dry and semi-humid continental climate zone.