1. The content of the course is different: the history of Senior One is mainly concentrated in the ancient history of China, covering historical events and figures from Xia, Shang and Zhou Dynasties to the end of Ming Dynasty. The history of grade two mainly includes the modern history of China and the modern history of the world.

2. The depth of study is different: the first year of high school has a relatively basic history and a brief introduction to historical events. The key point is to let students have a preliminary understanding and understanding of history. The learning level of history in the second day of junior high school has deepened, and the analysis of historical events and their causes and effects has become more detailed, requiring students to understand and remember important historical events and related knowledge points.