Lin Xiaomin, who graduated from university and worked as a white-collar worker in a large company, and Wu Dalong, the platoon leader of a certain Tibetan border defense unit, had been corresponding with each other as pen pals for five years. They agreed that when the number of letters reached 365, their relationship would automatically be upgraded, and they planned to meet.
Just as Lin Xiaomin was about to meet Wu Dalong in Tibet, Wu Dalong was injured by a high-voltage electric shock while rescuing the lives and property of Tibetan compatriots. The first time Lin Xiaomin saw Wu Dalong was when he was severely burned and facing double arm amputation. Lin Xiaomin was shocked, felt rejection, and with her colleague Qiu Shasha strongly advising her not to ask for trouble and to go back quickly, she decided to leave Wu Dalong.