Broadly speaking, all forms of poetry and literature before the Qing Dynasty can be called classical poetry. Starting from the Book of Songs, Chu Ci, Yuefu, Five Words in Wei and Jin Dynasties, Tang Poetry, Song Poetry, Yuan Qu, and so on. Some time ago, we focused on modern poetry. We might as well call it "Tang poetry". I will continue to explain how to write lyrics later. We might as well call this "word" Song poetry. The so-called "Tang" in Tang poetry and "Song" in Song poetry are just symbols, which does not mean that Tang poetry was not written by people who were not in the Tang Dynasty. Modern poetry and ci, which belong to the metrical category, are the classic forms formed in the high-end period of classical poetry. But this is not the whole poem. The formation of metrical poetry also has its origin, and understanding its origin is also one of the forms for us to understand the culture of the motherland. A comprehensive understanding of the general development of poetry is also a part we must do to inherit the culture of our motherland today. Willing to learn a little, my temperament is more loose and straightforward. I'll just say where I think. Please correct me after class if you can't say anything.