The author tells about his time-travel experience many years ago. The 13-year-old girl Shangguan Bai fell in love with Sima Yi, who was born 1,800 years ago, and gave up the superior life of the 21st century for him to come to the Three Kingdoms era. She wanted to help him realize his ideals and live a peaceful life, but fate played tricks on lovers and it was difficult to get married. Shangguan Bai seems to be living a life that millions of women dream of, but in fact he is in extreme pain inside. When she was finally able to be with the one she loved, she died of illness. Let us watch her short and tragic life together, follow her into the hearts of historical celebrities, cultivate an objective and impartial attitude towards studying history, and experience a different kind of life perception.