1, use a new question type. Since Jian 'an, literati have written current affairs with songs, often following ancient themes, often with limited content and uncoordinated style. Bai Juyi writes current affairs with new topics, so it is also called new topic Yuefu.

2. Write current events. After Jian 'an, writers have their own innovative themes, most of which have nothing to do with current affairs. Writing new themes and current events began with Du Fu. Bai Juyi followed the tradition and satirized reality with new Yuefu.

3, not to enter the music or not as a measure. Music is often used to sing and broadcast the New Yuefu Book of Songs. Musically, it has the name of Yuefu, but in content, it directly inherits the realistic spirit of Han Yuefu and is a real Yuefu.