The air rings with water music as snowmelt and spring rains sluice down the Rize Valley, tumbling in broad cataracts from one brimful lake to another.

The train loos stopped stinking. Prefabricated stainless steel commodes showed up on all newer rolling stock, complete with staff to sluice them down at regular intervals.

Luohe Sluice is a large floodgate adopted the down-horizontal gate on Shahe river. Its construction mission is to take up the river water level and to improve the river view.