Yancheng City Public Security Bureau Tinghu Branch Dayangwan Police Station. Official website of Yancheng Public Security Bureau shows that the jurisdiction of Dayangwan Police Station of Tinghu Branch of Yancheng Public Security Bureau includes Taihe Mingyuan Community, which is 476 meters away from Taihe Mingyuan. Yancheng, also known as Piaocheng, Deng Ying, Baijiang City and Du Yan, is a prefecture-level city under the jurisdiction of Jiangsu Province, a city in the middle of the Yangtze River Delta and a third-tier city, located in the eastern coastal area of China.