2020-12-30 05:35:34 GMT2020-12-30 13:35:34(Beijing Time) Xinhua English NANCHANG, Dec. 30 (Xinhua) -- In the city of Jiujiang in east China's Jiangxi Province, real-time monitoring systems are playing a prominent role in protecting the environment, under broader environmental efforts from cities along the Yangzte River. Jiujiang lies at the junction of Poyang Lake and the Yangtze, China's longest river. The city, which contains two-thirds of the lake's surface area and 152 km of Yangtze riverbank, has poured significant efforts into improving water quality with smart technologies. "The...