The meaning of "boasting in poetic spirit" comes from two aspects:
Its original meaning means that when a person reads a lot, he will take the air of a book, because in ancient times, the content of a book was concentrated on a ritual word. He has read more books, so he will naturally be influenced by the contents of the books, and his words and deeds will follow the books, forming the unique words and deeds of scholars.
Later, it was extended to: if a person is knowledgeable and knowledgeable, such a person does not need to dress up deliberately, and there will be a temperament from the inside out. On the contrary, if there is no connotation, no matter how he dresses up, he will not appear temperament.
From: Shi "Farewell to Dongchuan".
Original: "A thick coat wraps your life, and you are covered with poems and books."
Life is wrapped in coarse cloth and poor clothes, and the temperament of learning in the chest is naturally glorious.
Extended data
Creation background
Farewell to Dong Chuan is a farewell poem written by Su Shi to his good friend Dong Chuan, which was written when Su Shi returned to Chang 'an from Fengxiang. Su Shi was in Fengxiang, and Dong Chuan had followed Su Shi. Dong Chuan lived in poverty at that time, and his clothes were simple, but he was well-read and knowledgeable. Ordinary clothes could not hide his optimistic spirit.