Let's talk about it from complex to simple.

There is an old saying called "the road to simplicity", which means "the more truth, the simpler it is". Mr. Chen Shengshen is a famous Chinese American mathematician. He has a very interesting "law of mathematical life", that is, an important role of mathematics is to "unify the nine-nine, simplify the complex." By simplicity, the wise man does not mean the lack of content, but a profound awakening after prosperity, a realm of life that simplifies the complex. Simplicity first goes through a complicated process, just like reading a book, which is actually an awakening process. A happy life must be a simple life, and simplicity is the premise of a smart life.