A train on a bridge of the 141-kilometer Yuxi-Mengzi Railway, the China part of the Pan-Asia Railway linking China with members of the Association of Southeast Asian Nations. Because of the special geographical conditions, the construction team behind the Yuxi-Mengzi line was confronted with many challenges. More than half of the railway, 77 km, was built on bridges and through tunnels. The new line will ensure faster speed and safer trips that sharply reduce the cost of transportation in the region. Wang Jianyun / For China Daily