Huiwen middle school junior high school entrance examination, mathematics mainly takes the Olympic math test. Some so-called prescient parents let their children take an Olympic math class in primary school to make plans for the senior high school entrance examination a few years later. Even if a child is admitted to a so-called famous junior high school, how many students will excel in their studies in the future? After three years, most of them will not be admitted to a famous high school, even if they are admitted to a famous university. Moreover, the entrance examination for junior high school students in Huiwen Middle School is full of water, and the phenomenon of entering through the back door is serious. The content of the paper has been done in many Olympic math cram schools, and the paper is not of much level, so it is impossible to really select good students.