Since 19th century, the study of tablet calligraphy is getting mature. By the mean time, different views of calligraphy emerged. Under such circumstance, hardwood calligraphy was considered conservative. This paper is about a model of hardwood calligraphy. First, I will explain "formalism of Guange style", "the impaction of tablet calligraphy" and "the new calligraphy style". Second, I will discuss "the regulation of hardwood calligraphy", "the achievement of scholar spirit" and "between tradition and innovation". Finally, I will bring forward the relation between deviate and retreat about calligraphy style.