Introduction to White Horse, Not a Horse: The representative of the famous master is Zhao Guogong Sun Long. Famous scholars are eloquent and well-known for their ability to analyze names and facts. The most famous topic is "a white horse is not a horse". "White horse is not a horse" is actually very simple, that is to say, "white horse" is not the same as "horse". Here, the big concept of "horse" includes the small concept of "white horse", so the small concept cannot be equated with the big concept. But at that time, it was the first time that concepts were abstracted and debated. Therefore, it can be said that famous scholars created logic in our country.