Confucius in China and Socrates-Plato were thinkers of the same era. There were frequent social wars in Confucius' era, and the social situation in ancient Greece was similar. At that time, the survival value of a social individual was largely determined by its ignorant practice view and original practice ability. A strong and healthy soldier is a worthy hero of that era. China, after Confucius, opened a long historical period for social people to pursue the concept of knowing and doing. At that time, whether it was "teacher", "teacher's way" or "gentleman's view", they all abandoned the ignorant view of practice and tried to unify the theoretical form of intellectuality and behavior. At the same time, in the west, the ancient Greek thinkers who transformed into the concept of knowing and doing tended to overcorrect, which was manifested in the eager pursuit of human intellectuality, truth, existence and "ideas" in the early stage of human wisdom enlightenment. In the ancient East, China's great thinkers tended to coordinate their peers' behaviors, that is, the so-called "unity of knowledge and action", but this coordination and unity did not lie in intellectuality, but in the social practicability or practical application of behaviors. Philosophers in ancient Greece could think naked and pursue the truth sincerely, but Kong Qiu, Laozi and Zhuangzi didn't. They all looked much more elegant. There are examples in history in which western philosophers and thinkers would rather die for objective truth that has no practical or practical significance, but China did not.