Su Shi's painting theory and calligraphy theory all share a common realm model.The model can be divided into three realm:the first is"regular",that is,the familiarity and mastery of the techniques of the predecessors,and the crab painted on the eastern slope can depict details.In terms of calligraphy,learn Kaishu and further learn Xingshu and cursive.Copying the works of predecessors,you can get the essence of them,which is a representation of this realm.The second is"no rules",that is,painting can not only depict the form,but also portray the charm and momentum of the object.In calligraphy,it can be integrated and innovative,although it seems to be informal,in fact,the pen and ink are splendorous,and all contain subtle laws.Wu Daozi's paintings and Zhang Xu's calligraphy belong to this category realm.The third is"artistic conception",which is what distinguishes Shi calligraphy and painting from painters and calligraphers.Because the scholar has integrated richer aesthetic meaning,philosophical realm and the thickness,depth and concentration of his own life into calligraphy and painting,thus forming a profound charm that craftsmen's works cannot control.Wang Wei's paintings and Wang Xizhi's calligraphy both belong to this realm.As for Su Shi,it later came to the top,with its profound meaning of life,great personality and moral spirit,and pinned its hopes on calligraphy and painting,becoming an insurmountable peak in the tradition of calligraphy and painting of the scholars.