What is the significance of learning Tang poetry and Song lyrics?

Personally, when learning Song Ci, special attention should be paid to learning the conception and language of Song Ci. Although Tang poetry also focuses on conception, its poetic flavor is strong, and a polished poem is generally considered to be of inferior quality. Song poetry is different, it pays great attention to composition. For example, the purpose of Liu Yong's "Butterfly Loves Flowers" is to write about sadness. So what special way does Liu Yong use to write about sadness? This is what is worth analyzing. Another example is "The Sapphire Case" by He Zhu. The author focuses on writing about "leisure". The key is how this leisure is written. In other words, when studying Song Ci, the focus is not what the author wrote, but how the author expressed this content and why he expressed this content. It may be a little difficult to analyze the conception of a very long prose, but Song poetry is shorter and easier to analyze the conception. There is also the language of Song poetry, especially some well-known and popular lines, which are worth talking about so that students can accumulate more.