One scar, two thoughts, three years of life. The report believes that making amends is the theme of his life; Zhiyi believes that guilt is the background of their love. It wasn't until she went to Tibet to clarify her feelings, until he refuted others' difficulties in public, until both parents set the wedding date with smiles, that the two of them realized that the support of fighting for popsicles when they were young, the smell of warm porridge in the middle of the night, and the lingering kiss under the street lamp were never illusions. From childhood sweethearts to lovers, they crossed the gap of suspicion, withstood the disturbances of the outside world, and turned the trivial matters of the years into full-hearted joy. After going round and round, it turns out that you are the answer I have spent half my life on.