Taicang city and Beibei District are next to what type of water system?
Taicang:  The city located in the south of the Yangtze River estuary opposite Nantong, being bordered by Shanghai proper to the south, while the river also delineates much of its northeastern boundary along Chongming Island. Beibei District:  A satellite town in the north of central Chongqing, Beibei got its name because of the huge rock that extends to the middle of Jialing River, and is known for its historical culture in the period of the Republic of China, beautiful sceneries, and clean streets.
river