From our sophomore year's course assignment, the theme is the creation of red historical spirit. We selected four representative elements of Yan 'an, Shaanxi Province, to merge with the rotating shaft photo frame. It was somewhat rough. We led the team to complete the physical production of the product for the first time. The process was tortuous. Finally, we won the excellent award of the school-level youth cup-the prize was a red cup, which was of great significance.