Upon receiving his university acceptance letter, the protagonist is transported back to Beiping in May, after the fall of China. War and bloodshed engulf the nation, leaving behind a trail of sorrow and anger. The once vibrant Tsinghua University campus is now desolate, and Nankai University is in ruins. Faced with national crisis, the protagonist questions his path: to survive as an ordinary citizen or sacrifice himself as a hero. This is a dark and heavy era. Even as an ordinary student, he dreams of becoming a hero. He remembers the words: 'Not having a sword and not using a sword are two different things.' This story follows his journey, intertwined with romance and the backdrop of war-torn China.