© Provided by Xinhua YINCHUAN, April 2 (Xinhua) Over the past six years, Gui Tao, 42, has walked along a 1.34-km-long section of the Yellow River co
YINCHUAN, April 1 (Xinhua) Over the past six years, Gui Tao, 42, has walked along a 1.34-km-long section of the Yellow River countless times. The 10-minute w