Introduction to the Datong Chapter: In the courtyard of the Confucius Mansion, there is a shadow wall with the "Book of Rites Datong Chapter" in seal script engraved on the wall. This article is a Confucian classic, describing Confucius' ideal world of "universal world". Although the article only has 107 words, each word is precious. It clearly and profoundly reveals the traditional Chinese cultural theme of taking benevolence as its purpose and taking the world as its own responsibility, which is of great significance for promoting Confucian culture.