The Reason in Poetics of Song China and Zhouyi Studies

The poetry of Song China lays stress on reason and taste as a unification of two elements of poetry. The poetics of Song China underwent four stages and three leaps. Zhang Zai and Cheng Yi discussed reason philosophically. Su Xun put forth a proposition that once wind and water encounter each other literary grace comes out. Su Shi discussed poetry ontologically and he put forth a proposition that it is necessary to write what exists. Ye Mengde discussed poetry realistically and he put forth a proposition that it is necessary to write the current affairs. The spirit running through the four stages and three leaps is the cognitive principle Zhou Yi advocates.