Beichen branch xiaodian police station. Liu An Zhuang Village, Beichen District, Tianjin is located in the southwest of Xiaodian Town, Beichen District, Tianjin. According to the administrative division, it belongs to Xiaodian Town Street and is the jurisdiction area of Xiaodian Police Station of Beichen Branch. Tianjin is located in the north of China, downstream of Haihe River, and east of Bohai Sea. It is the largest port city in the north of China.