Aerial photo taken on July 18, 2022 shows the construction site of Zishui super major bridge along Changde-Yiyang-Changsha railway, in central China's Hunan Province. The 157-kilometer high-speed railway line, connecting the cities of Changde, Yiyang and Changsha in Hunan Province with a designed speed of 350 kilometers per hour, is an important part in China's high-speed railway network.(Photo: Xinhua)
Workers lay tracks at the Zishui super major bridge along Changde-Yiyang-Changsha railway, in central China's Hunan Province, July 18, 2022. The 157-kilometer high-speed railway line, connecting the cities of Changde, Yiyang and Changsha in Hunan Province with a designed speed of 350 kilometers per hour, is an important part in China's high-speed railway network.(Photo: Xinhua)
Aerial photo taken on July 18, 2022 shows a view of the Zishui super major bridge along Changde-Yiyang-Changsha railway, in central China's Hunan Province. The 157-kilometer high-speed railway line, connecting the cities of Changde, Yiyang and Changsha in Hunan Province with a designed speed of 350 kilometers per hour, is an important part in China's high-speed railway network.(Photo: Xinhua)
Workers lay tracks at the Zishui super major bridge along Changde-Yiyang-Changsha railway, in central China's Hunan Province, July 18, 2022. The 157-kilometer high-speed railway line, connecting the cities of Changde, Yiyang and Changsha in Hunan Province with a designed speed of 350 kilometers per hour, is an important part in China's high-speed railway network.(Photo: Xinhua)