The calligraphy works in the picture (in part) are the last two sentences of the ancient word "New Year's Day is like a dream" inscribed by President Mao Zedong on New Year's Day in 1930: "Down the mountain, the red flag is picturesque."
In the works, calligraphers write "Qi" as "Jing". "jing", pinyin for Jing (Pingyin), means a flag decorated with feathers or yak tail, generally referring to flags.
Praise this ancient word, just follow the routine.