In this short story, xinyu tells his sister guan that he wants revenge. He tells her that he is afraid that he will become evil because he looks like a buddhist. She reassures him that she will protect him. She tells him that it will be difficult for him to achieve his revenge, but that he should not worry, because she will help him. They decide to go find a suitable weapon to use in the battle, and guan tells him to ask her something first. He asks her if she will teach him martial arts, and she replies that she can learn it in fifteen years. . She then tells the story of perseverance. When she was young, her family would ask her and her cousin to learn poetry, and they would have to hand over one copy of their work every day, but not hers. Over time, she began to hate her cousin's writing. She sneaked into their study room one night and gave his poem to him. He accepted the result, but did not expose her as usual. He did not scold her, but he did not stop her from exchanging their homework every day for a long period of time. After a while, she decided that she wanted to repent and work hard on writing beautiful poems. She told her cousin that she would give up poetry, but his reply was that she was too bad to be a poet, and he should give up.