Gallery Construction workers celebrate the breakthrough of Tunnel Dajin No.1 of the Huanggang-Huangmei high-speed railway By DM NEWS - December 23, 2020 Huanggang: Construction workers celebrate the breakthrough of Tunnel Dajin No.1 of the Huanggang-Huangmei high-speed railway in Huanggang, central China’s Hubei Province, Dec. 22, 2020. –Agencies