I can no longer remember when the two women in the dormitory and I started to have such a quarrel. I just remember that one day I found a fat cockroach under the table in the dormitory and shouted for help. I called Big M back from outside in the morning, because Big M was an expert at catching cockroaches, rats and pests, and his reputation spread throughout Building 13. Big M rushed over in a hurry, but when she found out that it was me who found the cockroach, she turned around indifferently and said to Chen, I will go to anyone in the world who wants me to help catch cockroaches, but there is only one person who I will not help her catch even to my death. After saying that, Chen went out with an embarrassed expression. Even though the dormitory where I found the cockroach was also hers.
Later, I have always been curious, if one day she saw a cockroach in the dormitory and unfortunately recognized it as the one I found, would she go out of her way to show mercy to that cockroach? If so, then I would become that cockroach's lifesaver. And at that moment, I realized that there was a grudge between me and Big M that could never be untied.