History must be memorized, but mere memorization is definitely not enough. I just learned the history of grade one, and found that many questions will lose points if I only recite them. History needs to be understood, and understanding recitation will make you remember it better. In addition to understanding, it is also necessary to understand the laws of propositions, such as a historical event, why that person did it (that is, the reason), how he did it (such as Shang Yang's political reform, how he did it, that is, the content of the political reform), what influence (positive and negative) he did, and what inspired you (that is, to sum up the good influence, you need to learn from him according to the current situation). There is also the summary mentioned upstairs (preferably in tabular form). There are also historical events of the same type, which happened in different dynasties, and will be tested frequently. When summing up, we should also pay attention to their common ground.