The movie "77 Days" is based on the true story of the adventure writer Yang Liusong who traveled alone through the Qiangtang No Man's Land for 77 days. In the movie, the male protagonist, who has lost himself in life, wanders alone in the snowy plateau and explores the no man's land. The female protagonist is physically disabled but still faces life optimistically. She makes him determined to try the fantasy adventure in the no man's land that is impossible in the eyes of the world... Two real people in extraordinary situations, sincerely and bravely face the challenges of fate, and relentlessly pursue their original dreams and true selves... The film will give the audience a strong visual impact in terms of rhythm, picture, and tension, allowing the audience to follow the protagonist through an unparalleled adventure.