Sang Li has been secretly in love with Lu Tinghe for many years, but she avoids him because of her low self-esteem due to her family background. After the reunion on campus, Lu Tinghe helped many times to resolve the crisis. He guarded her silently and publicly confessed her love at the seminar. Sang Li discovered the love letter he had hidden in high school, finally let go of his guard, kissed back on tiptoe, and the two finally got married.
