As a turning point from the calligraphy of the Northern and Southern dynasties to the calligraphy of the early Tang Dynasty, the calligraphy of the Sui Dynasty played a leading and directional role in the development of calligraphy in the early Tang Dynasty  On the whole, the calligraphy of the Sui Dynasty gradually abandoned the flanking trend and bold pen of the calligraphy of the Northern Dynasty, absorbed the mellow and gentle characteristics of the calligraphy style of the Southern Dynasty, and formed a unique Sui Kai style
although it lasts a short time and has few popular works, it has a distinct personality, and it has become an important node and sample to understand the development process of regular script style today
Regular script is the most outstanding achievement type of calligraphy in Sui Dynasty