The first part of the book "Clouds and cranes swim in the sky, and the sea is full of splendor" comes from Liang Wudi's Xiaoyan "On the Advantages and Disadvantages of Ancient and Modern Scholars", commenting on Zhong Wei's book: "Zhong You's book is like clouds and cranes swimming in the sky, and the sea is full of lush lines, which is really sad." This article, referred to as book review or book review for short, was not quoted in ancient books before the Tang Dynasty, but first appeared in the book Wisdom of Sui Monks, the fifth volume of Chun Hua Wen Tie in the Song Dynasty. This passage mainly describes the superb realm of Zhong You's (Changyuan's) calligraphy, which is appropriate in weight, combining rigidity with softness, strong and powerful, quaint and dense. The second couplet "Mei Yan Zao Xia" refers to the hot days in early summer dotted with summer, as opposed to the following "Wheat welcomes autumn". The writing is steady and clever.