Cattle graze on the wetland by the Wusuli river along the China-Russia border in Northeast China's Heilongjiang province. [Photo/Xinhua]

At sunset, the senery of Wusuli river is very attractive. [Photo/Xinhua]

There are several wetlands in or by the Wusuli river. [Photo/Xinhua]

A huge bronze tiger statue, which is called "the best tiger in all land" by the locals, stands by the Wusuli river. [Photo/Xinhua]

The scenery of the Wusuli river is alwasys so charming in autumn. [Photo/Xinhua]

Chen-pao Island locates in the Chinese side of Wusuli river. [Photo/Xinhua]

Even in winter, people can still enjoy the beautiful landscape in Wusuli river. [Photo/Xinhua]

In early spring, ice is washed to the shore of the Wusuli river. [Photo/Xinhua]

The sunrise brights up the Wusuli river in early spring. [Photo/Xinhua]

Although covered with snow, the landscape of the Wusuli river is extemely fascinating. [Photo/Xinhua]