Can water be traced? You would probably say no. In the pristine valley of Shennongjia, located in central China's Hubei Province, no constant streams can be found; yet there are traces of rivers on the soggy ground. If you are patient enough, you will see how the water run across the forests on rocks and lichens, then disappears magically to wait for the second "marathon".

(Cover image is a still from the video)

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