Daredevils challenge themselves by walking on a glass-bottom skywalk built alongside a cliff of the 2491-meter-high Shaohua Mountain in northwestern China's Shaanxi Province on July 28, 2016. The 69-meter-long skywalk is part of the 455-meter-long wooden plank road erected on the mountain, allowing visitors to take in the breathtaking beauty of the mountain views while enjoying the thrills. [Photo: Xinhua]