An aerial drone photo taken on March 18, 2025 shows cargo ships sailing on Fenhu section of Taipu River in Wujiang District of Suzhou City, east China's Jiangsu Province. Taipu River, which originates from Taihu Lake in the west and flows into Huangpu River in the east, is a key river in the demonstration zones for green and integrated ecological development of the Yangtze River Delta. In recent years, Wujiang District of Suzhou City has worked together with Qingpu District of Shanghai and Jiashan County of Zhejiang Province to promote green development through joint protection and governance of ecological environment, intelligent management and setting up emission trading systems, as part of a campaign to accelerate the construction of demonstration zones for green and integrated ecological development of the Yangtze River Delta. (Xinhua/Ji Chunpeng)