After 2 years, Yangtze cleanup is obvious

Fu Zhiqiang, a middle-aged resident of Luzhou, Sichuan province, has made a habit of taking a walk every day - for more than a decade - along the bank of the Yangtze River.

"To keep fit, I would walk after dinner if it wasn't raining," he said. "I have seen the improvement in the quality of water in the river in the past two years."

Like Fu, all the roughly 5 million residents of Luzhou, in the upper reaches of the Yangtze, drink river water.