比较在《六观》里提到观通变,已有比较的意思。刘勰在《文心雕龙·通变》里说:“黄唐淳而质,虞夏质而辨,商周丽而雅”等,即认为黄帝唐尧时代的作品淳厚而质朴,虞舜夏禹时代的作品质朴而明晰,商周时代的作品华丽而典雅,是从各时代的文风来说的。这里讲的比较,是就具体作品来说的,通过比较来辨别 Comparison in the “six concept” mentioned in the concept of change has been more meaning. In the Wen Xin Diao Long Tong Tong, Liu Xie said: “The quality of the Tang dynasty and the quality of the Tang dynasty, the differentiation of the Shang dynasty and the Shang dynasty and the elegance of the Shang dynasty”, that is, the works of the Tang dynasty of the Yellow Emperor were honest and simple, The works are simple and clear. The works of the Shang and Zhou dynasties are magnificent and elegant. They are from the style of every era. The comparison here is about specific works, through the comparison to distinguish