People have fun at the Liaohe square in Liaoyuan city, Northeast China’s Liaoning Province. (Photo: /Jilin Daily)

The sourcefland of Dongliao River is covered with green trees. (Photo/Jilin Daily)

Photo shows Xianren River after the treatment and improvement. (Photo/Jilin Daily)

Photo shows the oak trees in Liaoheyuan township, Liaoyuan city, Northeast China’s Liaoning Province. (Photo/Jilin Daily)