The scroll of stars in junior high school is an exercise designed to help students prepare for the junior high school exam. It mainly covers the knowledge points of various subjects in primary school, but it is relatively difficult and closer to the junior high school level. Junior high school knowledge refers to the knowledge of junior high school subjects, including Chinese, mathematics, English, science and so on. The difficulty and depth of junior high school knowledge are relatively large, and the scope of content is relatively wide. The scroll of stars at the beginning of junior high school is mainly to help students adapt to and master junior high school knowledge in advance, so as to better cope with the learning challenges after entering junior high school.