The Taohe River, an important tributary of the upper reaches of the Yellow River, is turbid due to sediment collected while flowing through the Loess Plateau in western Gansu Province. (Photos: VCG; compiled by Li Ying)

When the Taohe River converges into the Liujiaxia Reservoir in the upper reaches of the Yellow River, a strong contrast between the turbid water and the clear water in the reservoir occurs, presenting a peculiar scene.

The Taohe River, an important tributary of the upper reaches of the Yellow River, is turbid due to sediment collected while flowing through the Loess Plateau in western Gansu Province.

When the Taohe River converges into the Liujiaxia Reservoir in the upper reaches of the Yellow River, a strong contrast between the turbid water and the clear water in the reservoir occurs, presenting a peculiar scene.