Maintenance workers change rails on the high-speed railroad linking east China's Shanghai and the city of Hangzhou in east China's Zhejiang Province, Sept. 18, 2021. (Xinhua/Fang Zhe)
Maintenance workers change rails on the high-speed railroad linking east China's Shanghai and the city of Hangzhou in east China's Zhejiang Province, Sept. 18, 2021. (Xinhua/Fang Zhe)
Maintenance workers change rails on the high-speed railroad linking east China's Shanghai and the city of Hangzhou in east China's Zhejiang Province, Sept. 18, 2021. (Xinhua/Fang Zhe)
Maintenance workers change rails on the high-speed railroad linking east China's Shanghai and the city of Hangzhou in east China's Zhejiang Province, Sept. 18, 2021. (Xinhua/Fang Zhe)
Maintenance workers change rails on the high-speed railroad linking east China's Shanghai and the city of Hangzhou in east China's Zhejiang Province, Sept. 18, 2021. (Xinhua/Fang Zhe)
Maintenance workers change rails on the high-speed railroad linking east China's Shanghai and the city of Hangzhou in east China's Zhejiang Province, Sept. 18, 2021. (Xinhua/Fang Zhe)