What are the ideological content and artistic features of Bai Juyi's satirical poems?

In terms of ideological achievements, the subject matter is extensive, the content is rich, and it is very realistic and critical. He described the most acute inequality between the rich and the poor and the miserable situation of the lower classes struggling under various kinds of exploitation and extortion in this era, and noticed that endless wars in the frontier caused thousands of innocent deaths, and so on. In terms of artistic achievements, the poet started from something and sang a sad thing; Be good at narration; Through the description of appearance and psychology, create characters with distinctive personality and vivid images; On the contrary, the two complement each other and see love and hate in comparison; Use it often and see the essence in people.