The calligraphic style in the early years of the Northern Song Dynasty followed that of the Tang Dynasty. New artistic conceptions and techniques came forth continuously in the middle and later periods. The style which stressed the author's spiritual pursuit and individual sentiment gradually came into being, represented by the Four Masters of the Song Dynasty, Su Shi, Huang Tingjian, Mi Fu and Cai Xiang. The thin script created by Emperor Huizong had a particular beauty of slim-ness and elegance. Many scholar officials, who were famous in literature or political circle, also created diverse and distinguished calligraphic works.