What's the difference between Tang poetry and Song poetry?

Differences in theme and content: poetry: mainly based on social group emotions; Ci: The theme and content of poetry based on the author's personal self-emotion are also very different. Poetry mainly focuses on political themes, with the rise and fall of the country, the sufferings of people's livelihood, ambition and career ups and downs as the main contents, mainly expressing the feelings of social groups; A striking feature of Ci's theme content is that it mainly describes the difference between men and women and lovesickness, and mostly expresses the author's personal feelings.