Gallery Staff members celebrate the drill-through of the Yanjiazhai tunnel of the Guiyang-Nanning high-speed Railway By DM NEWS - June 15, 2021 Dushan: Staff members celebrate the drill-through of the Yanjiazhai tunnel of the Guiyang-Nanning high-speed Railway in Dushan County, southwest China’s Guizhou Province, June 14, 2021. . . –Agencies