China-Laos railway tunnel construction making breakthroughs

Staff members of China Railway No. 8 Engineering Group celebrate when the Ban Ka No. 1 Tunnel along China-Laos railway is drilled through near Luang Prabang, Laos, Nov. 8, 2019. China-Laos railway tunnels' construction has been continuing to make lots of breakthroughs as the major tunnel Ban Ka No. 1 Tunnel near Luang Prabang was drilled through on Nov. 8 in the tropical mountains of northern Laos. (Photo by Kaikeo Saiyasane/Xinhua)