Is Cang Lang Shi Hua the research object of ancient literary theory?

Cang Shi Lang Hua is a poetic work of Yan Yu in Song Dynasty. Many famous viewpoints such as "Poetry has its own uniqueness" are put forward in the works, which are beneficial to both poetry creation and poetry criticism and have a great influence on later poetry criticism and literary theory. It was highly valued by researchers in the Song Dynasty and later dynasties and became an important research object in ancient literary dynasties. In recent years, with the revival of poetry, the study of Cang dialect has formed a new upsurge.