[In 1964, Chairman Mao said to Peng Dehuai: "The Chengdu-Kunming Railway must be repaired quickly, and I can't sleep if it is not repaired." No money, take out my salary; no road, I ride a donkey down to Xichang;

[In 1964, Chairman Mao said to Peng Dehuai: "The Chengdu-Kunming Railway must be repaired quickly, and I can't sleep if it is not repaired." No money, take out my salary; no road, I ride a donkey down to Xichang; no railroad tracks, tear down the coastal railway, we must open the Chengdu-Kunming Railway! ”】

It is better to remove the coastal railway than to open the Chengkun Line, because this is a matter of national security. Only by building the Chengkun Line can it strategically assist Vietnam and provide a good support for Tibet's transportation, especially the best management policy for the surrounding ethnic areas. On July 1, 1970, with a total length of nearly 1,100 kilometers, creating 18 of China's railways and 13 of the world's most railways, the Chengdu-Kunming Railway, which was called by the United Nations as "one of the three wonders of the conquest of nature by mankind in the twentieth century," was completed and opened to traffic, which is of great significance to the development of the southwest resources of the mainland, accelerating economic development along the route and consolidating national defense, and is also conducive to the unity and stable development of national unity.

Without Chairman Mao's far-sighted strategic decisions and without the spirit of selfless dedication of the people at that time, there would have been no myth of construction in the history of railways in this world, and there would be no China that we have today in stability and unity.