Li Shangyin is good at parallel prose writing, and his poems are of high literary value; Du Mu has many achievements in literary creation
He can be called a famous poet, fu, and ancient prose. Since Li Shangyin and Du Mu are collectively called "Little Li and Du", it shows that their literary achievements are similar, and their achievements are also very high.
If you want to compare them, they cannot be compared. Unless you study them from many aspects
For example, Li Shangyin is good at lyrical argumentation, while Du Mu is good at introduction and description. Since it is
writing an argumentative essay, you must have a multi-faceted approach. Compare.