A baby sits on a glass-bottomed bridge at Zhangjiajie Grand Canyon, central China's Hunan Province, on Nov. 12, 2021. The 430-meter long, six-meter wide bridge, linking two steep cliffs 300 meters above the ground, is paved with 99 panes of three-layer transparent glass.Photo:Xinhua

Tourists walk on a glass-bottomed bridge at Zhangjiajie Grand Canyon, central China's Hunan Province, Nov. 12, 2021. The 430-meter long, six-meter wide bridge, linking two steep cliffs 300 meters above the ground, is paved with 99 panes of three-layer transparent glass.Photo:Xinhua

Aerial photo taken on Nov. 12, 2021 shows tourists playing on Zhangjiajie Grand Canyon's glass-bottomed bridge, central China's Hunan Province. The 430-meter long, six-meter wide bridge, linking two steep cliffs 300 meters above the ground, is paved with 99 panes of three-layer transparent glass.Photo:Xinhua

Tourists look through a glass-bottomed bridge at Zhangjiajie Grand Canyon, central China's Hunan Province, on Nov. 12, 2021. The 430-meter long, six-meter wide bridge, linking two steep cliffs 300 meters above the ground, is paved with 99 panes of three-layer transparent glass.Photo:Xinhua

Aerial photo taken on Nov. 12, 2021 shows a tourist going bungee jumping from Zhangjiajie Grand Canyon's glass-bottomed bridge, central China's Hunan Province. The 430-meter long, six-meter wide bridge, linking two steep cliffs 300 meters above the ground, is paved with 99 panes of three-layer transparent glass.Photo:Xinhua