Taking the Journey of Horses and Horses as an example, this paper explains why Du Fu's poems are called "the history of poetry".

Du Fu used his poems to record the history of the era in which he lived, reflecting the broad social life. Just like a history, especially the social unrest caused by An Shi Rebellion, it is recorded in his poems in great detail. His poems can be regarded as history, which can be proved and supplemented, so it is called "the history of poetry". The name saint is a courtesy title of Confucianism. People who are called saints are people who conform to Confucianism, care about the country and the people, love the people like children, and have broad compassion. Du Fu is such a person. He has been wandering from place to place all his life, but he has always been enthusiastic about joining the WTO, loyal to the monarch and patriotic. I am in a difficult situation, but I can still care about people like myself. This kind of fraternity is worthy of the title of saint. This emotion is mainly expressed through his highly accomplished ci works. Du Fu wrote in "The Cottage is Blown by Autumn Wind" that there are thousands of luxury houses in Ande, and all the poor people in the world are smiling, which shows this situation. Finally, talk about Du Fu's artistic achievements. Du Fu's poems are masterpieces. Excellent in subject matter, content, style, language creation and composition, and achieved great success. Not much to write, this is easy to find. So combined with the above, he is called a poet.