This paper examines the phenomenon of inspiration from the human form in the history of calligraphy from the high Tang through the Sung dynasties. The study discusses how Sun Guoting used the sepsis in nature to conclude the cursive script, "The Eight Principles of Yong" used body to compare the strokes. The appearance of the "Eight Principles" to not earlier than the reign of Emperor Tang Xuanzong. Moreover in calligraphy theory "Jin-Gu"(tendon and bone) is conventionally used to judge the quality of the work. In the Northern Song dynasty additional terms such as "shen" (spirit) "chi" (quality) "gu" (bone) "rou" (muscle) and "xie" (blood) were used. This study explains the meanings and shows pictorially how these terms were employed.