2, to combine time events

Imagine the text as a story. Don't try to remember.

Small print is very important to help you remember.

It is good to work harder before the exam.

4, history learning is mainly to grasp the backbone! It is necessary to systematize knowledge points and compare and remember similar knowledge points! For example, the study of China's thoughts of past dynasties can compare and study the materialistic thoughts of past dynasties; Another example is the opening of a new air route and the comparison between Zheng He's voyages to the West in this country!

I suggest you look at the following website.