However, there was one poet in the Southern Dynasties who could carry forward the "Zuo Sifeng Power", and this was Bao Zhao (? ~ 466). Following Zuo Si, he once again criticized the gentry system. Some of the eighteen poems in his "It's Difficult to Travel" expressed his emotion that "the amount of talent is not as far as the amount of power", and he cried out sadly: "I can't eat at the table. I draw my sword and hit the pillar with a long sigh. How long will my husband live? I can fly and droop my wings!" "How can I feel that my heart is not wood and stone? I hesitate to speak!" He also wrote many frontier fortress poems. He made important contributions to the development of poetry themes. In terms of poetic style, he is also the creator of the seven-character song line. He was good at studying Han and Wei Dynasty music, and could organize seven-character rules in miscellaneous words. He also changed the rhyme of every sentence in Cao Pi's "Yan Ge Xing" to the rhyme of every other sentence, or changed the rhyme regularly, making the seven-character style Towards maturity.