The meaning of "expressing ambition through poetry" is not exactly the same.
The so-called "expressing ambition with poetry" in Zuo Zhuan means "expressing ambition with poetry", which means borrowing or extending some chapters in the Book of Songs to imply one's own political and religious embrace.
"Poetry expresses ambition" in Yao Dian means "Poetry expresses the poet's ambition", and the meaning of this "ambition" focuses on thoughts, ambitions and aspirations.
After the mid-Warring States period, the meaning of "ambition" has gradually expanded due to the emphasis on the lyrical characteristics of poetry and the development of a hundred schools of thought. The "ambition" in Confucius' era mainly refers to political aspirations, which can be seen from Confucius' view of his disciples' ambitions in The Analects of Confucius. And Zhuangzi's "ambition" of "poetry based on Tao" refers to people's thoughts, wishes and feelings in a general sense. In Li Sao, it is said that "the ambition is restrained by bending one's heart" and "the ambition is restrained by saving one's life". Although the content of this ambition is still dominated by Qu Yuan's political ideal ambition, it obviously includes the anger caused by the failure to realize his political ideal ambition and the hatred for the villain. As for what he said in "Huai Sha", "If you care about your feelings, you will be happy, but if you are wronged, you will be restrained." "If you set your mind on broad aspirations, why are you afraid?" . The "ambition" here actually refers to his whole inner thoughts, wishes and feelings. Therefore, we can see that the content of "poetry expressing ambition" in pre-Qin period has developed and changed.
by the Han dynasty, people's understanding of the essential characteristics of "poetry expresses aspiration", that is, "poetry expresses people's thoughts and feelings and presents people's spiritual world" basically tends to be clear. "Preface to Mao Poetry" says: "A poet's ambition lies in his heart, his speech is a poem, and his emotion moves in the middle and his words are in the form." Emotions are mentioned together and linked, which is more pertinent and objective.