What is the understanding of "Guan Ju is happy but not sad but not sad"?

It means: "Guanyong" tells us that happiness is not uncontrolled, but sadness is not too sad. "

Original text:

Confucius said: ""Guanyong" is joyful but not obscene, sad but not sad. "

Translation:

Confucius said: "The poem "Guanyong" is happy but not dissolute, sad but not sad. "

Confucius's evaluation of the poem "Guanyong" reflects his artistic view of "sitting without evil". "Guanyong" is a poem about the love between men and women and congratulations on weddings, which is related to "thinking about innocence". "Innocence" is irrelevant, but Confucius realized the golden mean of "joy but not obscenity, sadness but not sadness", and believed that neither sadness nor happiness should be excessive, and it has its valuable value.

Extended information:

"Zhou Nan·Guan Ju" is the first poem in the "Book of Songs", the first collection of poems in ancient China. It is generally considered to be a love song describing the love between a man and a woman. This poem is the first chapter. In the following chapters, the act of picking water plants evokes the protagonist's crazy lovesickness and pursuit of women. In art, he cleverly uses the expression technique of "Xing", the language is beautiful, and he is good at using double-voice rhymes and repeated chapters and words, which enhances the phonological beauty of the poems and the vividness of describing human figures and onomatopoeia to convey emotions.