General secretary Xi Jinping repeatedly stressed the importance of restoring the ecological environment of the Yangtze River. Since 2016, Jiangsu has launched a series of proposals under the guidance of the call to "strengthen environmental protection rather than seeking rapid growth at the cost of the environment". In view of the chronic diseases such as water shrinkage, ecological attenuation and river bank fragility caused by heavy chemical engineering encircling the river, illegal discharge of waste water, disorderly sand mining and shoreline occupation, we resolutely formulated a prescription for green development, intelligent development, healthy development and coordinated development. But this is far from the goal we want to achieve.This article demonstrates in detail how Jiangsu should protect the Yangtze River from the following 4 points:1. "Addition". Add greenery to the river bank and protect the ecology.2. "Subtraction". Solve the difficult problem of heavy chemical engineering encircling the river.3. "Multiplication". Build the "Water Cube" of Yangtze River Culture.4. "Division". Control pollution source in the whole river basin.
