Six years ago, she said "I like you" to him in the corridor under the setting sun after school. Five years after he left, she said to him on a wet and cold rainy night, "Why are you so confident?" Five years, for the mountains and rivers, a corner of the vast sea; for the old man, life has come to an end; but, what about Qian Wei? Over the past five years, he has become a cinnabar mole in her heart. Even though his appearance in her memory has become blurry, she can still return to the past in a trance at a certain full moon moment. She is tired of the game of chasing men. She always feels that he is not as good as her, but her feelings are growing like weeds. However, how could she know that that summer sunset was the most beautiful existence in his life.