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Chinese tourists walk across a glass-bottomed suspension bridge in the Shiniuzhai mountains in Pingjiang county, Hunan province some 150 kilometers from Changsha on October 8, 2015. The bridge, originally a wooden walkway spanning some 300 meters across the 180-meter deep valley, reopened two weeks ago following renovations as a glass-bottomed tourist attraction. / AFP PHOTO / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

Chinese tourists walk across a glass-bottomed suspension bridge in the Shiniuzhai mountains in Pingjiang county, Hunan province some 150 kilometers from Changsha on October 8, 2015. The bridge, originally a wooden walkway spanning some 300 meters across the 180-meter deep valley, reopened two weeks ago following renovations as a glass-bottomed tourist attraction. / AFP PHOTO / JOHANNES EISELE        (Photo credit should read JOHANNES EISELE/AFP/Getty Images)