It sounds obvious but, again, we learn more about the world literature by studying the evolution of poetry through the centuries; as a result, we find out more of the world's history, evoke our interest  and understanding of the ancient writers and of humanity in general.

Poetry analysis and its translation from the language like archaic Chinese, which is the foreign language for the contemporary Chinese as well, is not scientifically exact, it is somewhat subjective to how it affects the translator's academic knowledge and daily experience. Yet, I find it very difficult to put a lot of credit on those representatives of the Old School (most of them are the famously known scholars of academic elite) who do not try to dig deeper about the poets of antiquity, and to reveal their motivations and find out those who affected them.