Zhao Mengyao cleans the glass bridge at the Zhangjiajie Grand Canyon in Zhangjiajie scenic spot, central China's Hunan Province, April 30, 2019. Zhao Mengyao is a cleaner for the glass bridge at the Zhangjiajie Grand Canyon, which has a length of 430 meters and hangs 300 meters above the canyon bottom. Born in the 2000s, Zhao overcomes her fear and works with her male colleagues for the cleaning of the bridge bottom, which she regards as meaningful to bring joy to visitors. (Xinhua/Wu Yongbing)