The collective name of Lu's "Poetry", Qi's "Poetry", Han's "Poetry" and Mao's "Poetry". Poetry, also known as poetry, is a literary genre that uses highly condensed language to vividly express the author's rich emotions, reflects social life in a concentrated way, and has a certain rhythm and rhythm. The "Four Studies of Poetry" are Lu's "Poetry" and Qi's "Poetry" , Han's "Poetry" and Mao's "Poetry" collectively called "Poetry", which can meet the different needs of the masses.