Yan Zhenqing has opened up a brand-new realm of calligraphy: in terms of characteristics, Yan has a brand-new figure, strict statutes and great momentum. From the aesthetic point of view, beauty of face and beauty of body are dignified, masculine and artificial, and beauty of number is simultaneous, which sets a rule for later generations. From the perspective of the times, the early Tang dynasty inherited the rest of the Jin and Song dynasties, but failed to stand on its own feet. As soon as Yan style appeared, the new style of Tang Doutan casting became one of the distinctive features of the prosperous Tang Dynasty.