This scope is too broad. The so-called humanistic tradition almost covers the entire development history of Chinese civilization. The themes are almost everywhere.
You can follow the teacher’s requirements, such as what is the background of this question? After finishing what kind of text, the teacher issues this type of question? Or you judge that certain exams may ask such questions. What are the possible signs you rely on? Search according to the picture and narrow the scope as much as possible to be closest to the original intention of the question maker.
Most of the poems are about borrowing objects to express aspirations, and they always express the traditional outlook on life of scholar-bureaucrats. The skill lies beyond poetry. It is not enough to just read the poems. You also need to understand the thoughts expressed by the poets.