What does an expression pack of the Red Army mean?

The expression pack explains a kind of values and a kind of spiritual strength.

The Little Red Army on the Long March has 16 expressions, which was creatively planned by China Fingertip Studio and produced by the brainstorming design team of the Department of Journalism and Communication of China Communication University. The Red Army crossed the grassland, crossed the Chishui River, flew over the Luding Bridge, held a Zunyi meeting, and joined forces with the Pacific Insurance ... Many expressions in the expression pack will obviously remind readers of the Long March story in Chinese and history textbooks when they were children.