What are the reasons why the poems of Li Bai, Du Pu and Bai Juyi have their own characteristics?

Li Bai was a poet in the prosperous Tang Dynasty. At that time, the national strength was strong, and the literati had strong national self-esteem and self-confidence. They are eager to make contributions, have lofty aspirations and high self-confidence, and are generous and open-minded.

Du Fu was also a poet in the prosperous Tang Dynasty, but he was younger than Li Bai 1 1 year. He experienced the Anshi Rebellion, was in an era of declining sound in the Tang Dynasty, and saw the sufferings brought by the war to the people and the country. In addition, his life was bumpy, loyal to the monarch and loving the people, which reflected his thoughts of worrying about the country and the people in his current creation.

Bai Juyi was a poet in the middle Tang Dynasty, and his national strength gradually declined. Scholars not only have profound criticism and reflection on the dark social reality, but also have the desire to revive it, but after hard work, they find that there is nothing they can do about it.