Classics refer to the classics in the Four Books and Five Classics, while classics are the official document system before the Spring and Autumn Period and the Warring States Period. What is the classic that people often say now? An enduring masterpiece, respected by later generations, is called a classic. Classics refer to exemplary and authoritative works. Classics are the "most valuable books" chosen by history. Ancient and modern Chinese and foreign classics and authoritative works in various fields of knowledge are all classics. Especially those great original and groundbreaking works are simply called "classics", such as Laozi, Analects of Confucius, Bible and Diamond Sutra. Some of them are even called "Classics among Classics", ranking first among the classic groups, such as China's Book of Changes and Buddhist Heart Sutra, all of which have this honor. "Point" is a cognitive word. Look from the Oracle Bone Inscriptions glyph, the word "book" is above, and the word "big" is below. Together, it is a big book. The original meaning of canon refers to important documents and classics.