What is the name of the estuary surrounded by the delta containing Changzhou Island?
Changzhou Island Changzhou Island, formerly known in English as Dane or Dane's Island , is an island in the Pearl River Delta of China's Guangdong Province. It is now administered as part of Guangzhou's Huangpu District, although the historic Huangpu Island was nearby Pazhou, which forms part of Haizhu District.
Ao River The Ao (), also known as the Dai, is the sixth longest river of Fujian province, China. It originates in the Jiufeng Mountains and flows into the East China Sea. The river has a total length of 137 km and basin area of 2665 square kilometers.