What is the background of the slogan "20 years is super beautiful, 15 years is super English"? What can we learn from it?

"Long live the people, how brave the people are and how fertile the land is. Twenty years is super beautiful and fifteen years is super English. "

Background: During the First Five-Year Plan period, the task of socialist transformation was basically completed (1953- 1957).

1958 In February, People's Daily published an editorial entitled "Go All Out, Strive for the Top", clearly stating that the national economy should achieve a great leap in an all-round way.

At the beginning of June, 1958, the State Planning Commission put forward the "key points of the second five-year plan", proposing to surpass Britain in five years and catch up with the United States in ten years.

Enlightenment: In the process of economic development, we should proceed from reality and seek truth from facts.