Sad for fallen leaves in autumn, happy for soft branches in spring. Is this an ancient style poem?

It is an ancient style poem that is sad for fallen leaves in the golden autumn and happy for the soft spring.

The rhythm of ancient poetry is free, regardless of antithesis, level and oblique, and the rhyme is broad. There is no limit on the length of the poem. The sentences can be four-character, five-character, six-character, seven-character, or miscellaneous. Six-character prose sentences were first scattered in The Book of Songs. There are single sentences and even sentences. By the time of "Chu Ci", six-character sentences were not only more common, but also had four or more consecutive sentences. The complete and standardized six-character poem only appeared during the Jian'an period.