People visit a glass plank road built at the Yalong Bay forest park in Sanya, south China's Hainan Province, July 29, 2018. The 400-meter-long plank road will open for tourists in August. (Xinhua/Sha Xiaofeng)

People visit a glass plank road built at the Yalong Bay forest park in Sanya, south China's Hainan Province, July 29, 2018. The 400-meter-long plank road will open for tourists in August. (Xinhua/Sha Xiaofeng)

People visit a glass plank road built at the Yalong Bay forest park in Sanya, south China's Hainan Province, July 29, 2018. The 400-meter-long plank road will open for tourists in August. (Xinhua/Sha Xiaofeng)

People visit a glass plank road built at the Yalong Bay forest park in Sanya, south China's Hainan Province, July 29, 2018. The 400-meter-long plank road will open for tourists in August. (Xinhua/Sha Xiaofeng)