A new mountain tunnel as a key project of the Moding-Vientiane section of the China-Laos Railway, designed by China Railway Eryuan Engineering Group Co., Ltd. and constructed by China Railway Guangzhou Engineering Group, was drilled through on September 14. Located in a primitive forest in Oudomxay Province, Laos, the tunnel is 8,176 meters long and as deep as 512 meters. To date, 73 of all the 75 tunnels along the Moding-Vientiane section of the railway have been completed. (by Luo Renli, Lei Li and Zhang Zhihui)