In the theory of literary origin, Shen-yue argued that poetry originated from “Zhi”(志) and began with a native person and had a lyrical function. In the theory of literary development, the cardio thoracic concocted the theory of “Qiu Xin Si bian”(求新思變) while at the same time grasping the context of poetry development. In literary creationism, Shen-Yue raised “San Yi Shuo”(三易說) in addition to the theory of easy, which was the guiding principle of the poetry creation at the time, where the poets of Qi-Liang(齊梁) Dynasty, combined the frequently heard words, easy-to-understand letters with the plain biography, and created a poem with a strong, natural, clean, and elegant appearance while paying attention to easy.