When Xie Nuanxiu was 26, Lin Qi was 28, and they had known each other for 10 years. They met as friends, got to know each other as confidants, fell in love with each other as lovers, and finally, got along with each other as brother-in-law and uncle. From the moment he decided to get married, from the moment he did not object to his marriage, they promised each other to never intervene in each other's world again and to withdraw from the circle of love forever.