1. Similar poetic style: Song and Shen Quanqi are similar in poetic style, both of which belong to the category of court poetry, paying attention to meter, rhetoric and rhyme, with formal beauty and artistic beauty as the main features.
2. Similarity of literary status: Song and Shen Quanqi were both famous court poets at that time, occupying an important position in the literary history of the Tang Dynasty.
3. Similarities in creative practice: both Song and Shen Quanqi wrote poems for the court to prepare and entertain courtiers, which promoted the development of court poems.