Summary：To ensure the timely opening of Lanzhou-Chongqing Railway, Lanzhou-Chongqing Railway Company led all builders in their full-swing effort in the consistent construction of Humaling and Muzhailing Tunnels of Lanzhou-Chongqing Railway, the key and difficult control projects of the railway during the Spring Festival Holiday

　To ensure the timely opening of Lanzhou-Chongqing Railway,  Lanzhou-Chongqing Railway Company led all builders in their full-swing effort in the consistent construction of Humaling and Muzhailing Tunnels of Lanzhou-Chongqing Railway, the key and difficult control projects of the railway during the Spring Festival Holiday.

　　During the Holiday, Lanzhou-Chongqing Railway Company established an on-duty supervision system, under which its leaders and best employees went to the sites to strengthen the organization and guidance of construction and speed up the progress. There were more than 150 workers and 110 pieces/sets of equipment at two construction sites of Humaling Tunnel and more than 1200 workers and 750 pieces/sets of equipment at six construction sites of Muzhailing Tunnel.