Enjoy this aerial view of the confluence of the clear Yellow River and the muddy Taohe River near the Liujiaxia Reservoir in Yongjing County, Gansu Province. The clear distinction of the waters is sometimes dubbed "two-flavor hot pot," an iconic sight in the ecological protection efforts in the upper reaches of the Yellow River. Thanks to the construction of the Liujiaxia Reservoir, which helps precipitate the sediment and control flooding and afforestation efforts, the water quality of the Yellow River in Gansu has been greatly improved.