2. Starting from the theme of poetry, such as lyric poetry, most of them show the poet's depression or show his noble character.
3. Starting with poets who write poems, such as Li Qingzhao's poems are mostly "worries", but the worries in the early and late periods are different. In the early stage, it was the worry of young women in boudoir, and in the later stage, it was the hatred of the rich after the country broke.