hree Red Banners (Chinese: 三面红旗) was an ideological slogan in the late 1950s which called on the Chinese people to build a socialist state. The "Three Red Banners" also called the "Three Red Flags," consisted of the General Line for socialist construction, the Great Leap Forward and the people's communes.
https://en.wikipedia.org/wiki/Three_Red_Banners#:~:text=Three%20Red%20Banners%20(Chinese%3A%20%E4%B8%89%E9%9D%A2,Forward%20and%20the%20people's%20communes.