What is the connotation that Confucius' poems can complain about?

The theory of "nature, management, group and resentment" put forward by Confucius is rooted in the unique interpretation tradition in ancient China. It puts "people" and "the world" in an important position, showing great concern and contradictory attitude towards language. Its main purpose is not to understand the artistic characteristics of poetry itself, but to arouse the meaning through image metaphor, get the communication between the author and the reader, and improve people's spirit through learning poetry.

Zhong Rong's Preface to Poetry emphasizes that "poetry can be resentful", takes resentment as the motive of poetry creation, and thinks that poetry can release resentment and free poets from mental depression. Zhong Rong's so-called "poetry can complain" is the enrichment and development of Confucius' "poetry can complain" In poetry, "poetry can be blamed" has developed from "resentment" to "resentment"