Most people think physics is difficult and obscure, but most people don't know that the abstruse physics is usually reflected in the complexity of mathematical calculation. The core idea in physics is always simple. The aim of Physics in a Six Hexagram is to bypass the complicated mathematical calculations and explain the core physics ideas to readers in popular language. The so-called "Hexagram", starting from the most direct perception of human beings, extends to six extreme states, namely, extremely fast, extremely heavy, extremely small, extremely hot and extremely cold, and shows all the essence of the pioneer physics concepts, so that you can put aside complicated mathematics and experience the subtlety of physics thoughts.