A 1952 series, devoted to the reconstruction of war damage and new construction of railways.

The poster continues with "The main arteries of the Southwest and Northwest  - the Chengdu-Chongqing Railway and Tianlan Railway", showing, first, how the Chengdu-Chongqing line is put in operation. The last three images on the poster include a map of the Tianlan Railway and construction work.

The Tianlan Railway is the last section of the Longhai Railway, starting from Tianshui, Gansu Province in the east, to Lanzhou, the capital of Gansu Province, in the west, with a total length of 348 kilometers, connecting the three trunk lines of the Lanzhou-Xinjiang Railway, the Lanzhou-Qinghai Railway and the Baolan-Lanzhou Railway. Construction of the railway started in May 1946, but by 1949 only 13% of the total project was completed. After the founding of the PRC, the railway resumed work in April 1950, was opened to traffic in October 1952, and was delivered for operation in August 1954. It was transformed into an electrified railway in 1984. In 2000, a double-track reconstruction was carried out and it was put into operation in 2003.