Answer: Correct.
Old-style poems include modern poems (metrical poems) and ancient poems (non-metrical poems). Ancient poetry does not pay attention to antithesis, levelness and cohesion, and uses rhymes loosely to use adjacent rhymes. Modern poetry is metrical poetry.
Li Bai and Du Fu are people of the same era. At that time, the imperial examination of modern poetry (five-character arrangement) had already begun. Although Li Bai didn't take part in the imperial examination, how could he not write modern poems as a scholar?
Li Bai, of course, has many modern poems that completely conform to the rules, and Du Fu, of course, also has many ancient poems that don't pay attention to the rules.
Compared with Du Fu, Li Bai seems to prefer classical poetry, especially singing, which can best reflect his bold and elegant poetic style. Du Fu is regarded as a "master" with both qualities. In the Tang Dynasty, Yuan Zhen evaluated Du Fu in the Epitaph of Du Jun, Yuan Wailang, Ministry of Engineering of Tang Dynasty;
As for Miko, the so-called thin and elegant, that is, Shen, Song, Su, Li, Cao, Liu, Xie's aloof, miscellaneous Xu, and Yu's beautiful flow, all have the momentum of ancient and modern times, and each has his own specialty.