February 26, 1965 (, Otomi In the first month 25), the State Council issued the "decision on the southwest three-line construction institutional issues.

1965 2 26, the CPC Central Committee, the State Council issued the "About Southwest institutional issues of third-line construction decision. Southwest of third-line Construction Committee decided to set up in order to strengthen the leadership of the three-line construction of the entire southwest. On March 29, the consent Project Leadership Committee to the Director, Cheng Zihua, YAN Xiu-Feng, deputy director of CPC Central Committee issued the "About Southwest Construction Committee composed of three lines of approval".