First of all, look at yourself. What do you know better? The accumulated knowledge is relatively profound. First of all, I think school is more difficult to write. For example, realism school and romanticism school are different in different countries or different times, and their concepts are different. Moreover, its scope is relatively large and it is not easy to master. As for the category of thought, I think thinkers may be thinkers. It is better to master it and suggest some thinkers.