The article discusses ways to control water pollution in river-lake systems, focusing on the Taihu Lake Basin. The researchers studied the water system and identified pollution problems. They proposed strategies like controlling pollutants at the source, purifying incoming rivers, and managing pollutant sources in watersheds. By implementing these strategies, they aim to improve the water quality of the lakes and rivers in the area. The study also looked at how pollutants move in the environment and suggested using solid waste for rural wastewater treatment. The goal is to protect the water environment and enhance the ecosystem's ability to clean itself.