In the spring of 1941, Su Wanqing began to write her first letter on the eve of her newlywed husband Lin Zhiyuan's departure, informing her of the good news of her pregnancy. After her husband left, the war situation worsened and communications were interrupted. She gave birth to her daughter Lin Nianyuan in loneliness.
Her mother-in-law died of illness, and Su Wanqing arranged the funeral alone. After the war ended in 1946, she saw her husband's name on the missing list and still insisted on writing letters to record every detail of her life. He sold his jewelry to make ends meet, worked hard to integrate into teaching, and participated in building war memorials. Her daughter showed her musical talent and became the comfort of her life. In the 1960s, when her daughter grew up and left home, Su Wanqing compiled her letters and prepared them for publication. After she was diagnosed with a terminal illness in the 1970s, she systematically compiled her lifelong letters and completed the final record of her life.