What are the contributions of Li Sao from the perspective of creative genre?

Poems in Sao style refer to poems such as Li Sao, because Qu Yuan's poems belong to the category of poems as rhymes. Moreover, the ancients thought that Qu Yuan was not far away from ancient poets, and his works still had the legacy of ancient sages, which won the poet's purpose or changed customs. Qu Yuan's Li Sao is a poem of self-innovation, that is, a poem in Sao style, so it is called Qu Yuan's poem in Sao style. This kind of works is full of lyrical elements and romantic atmosphere, with long length and free form, and the word "Xi" at the end of the sentence.