Who put forward the idea that the article is composed of songs and poems combined with things?

"Articles should be written in time, and poems should be written in content" is a viewpoint put forward by Bai Juyi, a realistic poet in Tang Dynasty.

This sentence means that articles should be created for the present era, and poems should reflect the real things. It emphasizes the close connection between literary works and social reality, and advocates that literature should have the times and practical significance. Bai Juyi believes that literary works should pay attention to social problems, reflect people's sufferings, and play a role in satirizing current disadvantages and educating people. His poetry works embody this idea, such as Song of Eternal Sorrow and Pipa Travel, which reflect various social phenomena and problems by describing specific people and things. This view has a far-reaching influence on later literary creation, emphasizing the social responsibility and practical significance of literature, encouraging writers to pay attention to the times and be close to life, and making literary works more vital and valuable. At the same time, it also reminds people that literature is not only the expression of personal feelings, but also closely related to social development and people's lives.