Macro is based on micro. If you want to learn the macro well, you must learn the micro well first. When we go to the macro, we also find it difficult, because it is always like this for the first time. If you really want to learn this subject well, you can spend more time on it. The important premise is to learn math well. This is why many people find it difficult to learn at first. Because math didn't last long at that time. Many macro and micro things are supported by mathematics, so learning mathematics well is an important prerequisite.

Macroscopically, it is difficult. If you want to learn well, you must have the patience to read books, read them again and again, and read them a hundred times. This is indeed a fact. You may find it difficult to understand after reading it once, but after reading it the second time and the third time, you will gradually find it so. In addition, it is also necessary to take notes manually and learn to summarize.