What contribution did Du Fu's metrical poems make to China's poems?

Third, Du Fu's pioneering contribution to the genre of rhythmic poetry. The artistic achievements of Du Fu's poems are mainly manifested in his regular poems. First of all, he expanded the scope of expression of regular poems, writing homesickness, feasts, landscapes, current affairs and so on. The range expressed by other poetry genres can be expressed in the form of metrical poems. The second is to create a large number of poems. Qin Zhou's five poems, including Twenty Miscellaneous Poems, and seven poems, including Five Poems on Historic Sites and Eight Poems on Autumn Prosperity, are of classic significance in the history of China's poetry.