Staff members from ecological environment departments in Wujiang District of Suzhou City in Jiangsu Province, Qingpu District of Shanghai and Jiashan County of Zhejiang Province conduct joint water quality monitoring on the Taipu River in Wujiang District of Suzhou City, east China's Jiangsu Province, March 18, 2025. 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)