My essay was used as a proposition essay for the college entrance examination, and I am still very happy. In fact, my articles are often used by middle school, high school students, and junior high school students as extracurricular or in-class materials for some of their propositions. It turned out that it was cited in the high school entrance examination, and it was cited once in Shanghai's spring college entrance examination a few years ago, but the summer college entrance examination has not yet been used. It also happens that every year Xinmin Evening News will ask me to comment on Shanghai's college entrance examination essay, and I will be limited to a few minutes, and I must write a paragraph to comment on one

The new volume of mathematics is difficult