Yang Xiaobing is Yu Zixuan's childhood sweetheart. They have known each other since they wore crotchless pants. They went to the same nursery school, the same elementary school, the same middle school, and the same high school. It was simply a bad relationship. The only difference was that Yang Xiaobing was always one grade higher than Yu Zixuan. The reason for this bad relationship is very simple. Their parents are colleagues in the same unit, live in the same family compound, and the two families are neighbors. So even going to and from school, the two of them walked together for fifteen years. This relationship did not come to an end until Yang Xiaobing was admitted to T University in City Z.
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