For unknown reasons, I returned to my hometown after seven years of absence. My youth was gone and my appearance was old. The past events unfolded one after another, including unexpected reunions and panicked escapes. Is it the endless entanglement, or is it the reluctance to give up in the heart, I never know where tomorrow will be, the eternal unknown of happiness, is it the inability to believe, or the unwillingness to believe the reality in front of me. Will you regret it many years later?