Staff members work at Tunnel Dajin No1 of the Huanggang-Huangmei high-speed railway in Huanggang, Central China's Hubei province, Dec 22, 2020. The 605-meter-long Tunnel Dajin No1 was successfully drilled through on Dec 22. So far, all the 15 tunnels along the Huanggang-Huangmei high-speed railway have been holed through. The 125.12-km Huanggang-Huangmei high-speed railway in Hubei province is designed to run at a speed of 350 km per hour. [Photo/Xinhua]
Construction workers celebrate the breakthrough of Tunnel Dajin No1 of the Huanggang-Huangmei high-speed railway in Huanggang, Central China's Hubei province, Dec 22, 2020. [Photo/Xinhua]
Photo taken on Dec 22, 2020 shows the construction site of Tunnel Dajin No1 of the Huanggang-Huangmei high-speed railway in Huanggang, Central China's Hubei province. [Photo/Xinhua]
Staff members work at Tunnel Dajin No1 of the Huanggang-Huangmei high-speed railway in Huanggang, Central China's Hubei province, Dec 22, 2020. [Photo/Xinhua]
A staff member works at Tunnel Dajin No1 of the Huanggang-Huangmei high-speed railway in Huanggang, Central China's Hubei province, Dec 22, 2020. [Photo/Xinhua]
Staff members work at Tunnel Dajin No1 of the Huanggang-Huangmei high-speed railway in Huanggang, Central China's Hubei province, Dec 22, 2020. [Photo/Xinhua]
