The most famous sentence in The Book of Songs is Zheng Fengji.

"I don't see you for a day, like March" is a famous sentence throughout the ages.

Zheng Guofeng von Ji Zi is a poem in The Book of Songs. The whole poem consists of three chapters, each with four sentences. It's a Chinese folk song written by Zhengdi in the pre-Qin period. This poem is about unrequited love and describes a woman who misses her sweetheart. Every time I see something green, a woman will think of her sweetheart's green collar and jade. So she boarded the tower, just to see the trace of her sweetheart. If one day she can't see it, she will feel as if it is once every three months. The whole poem fully describes the psychological activities of female unrequited love. This is a rare and beautiful love song, which has become a classic in the history of China literature. Among them, "I don't see you for a day, like March" is an eternal famous sentence.