Yan Zhenqing
During the fourth century AD, calligraphy came to full maturity. The Kǎishū style (traditional regular script) — still in use today — and attributed to Wang Xizhi (王羲之, 303 CE-361 AD) and his followers, is even more regularized. reached its peak in the Tang Dynasty, when famous calligraphers like Yan Zhenqing and Liu Gongquan produced most of the fine works in Kaishu. Its spread was encouraged by Emperor Mingzong of Later Tang (926 CE -933 AD), who ordered the printing of the classics using new wooden blocks in Kaishu. Printing technologies here allowed shapes to stabilize. The Kaishu shape of characters 1000 years ago was mostly similar to that at the end of Imperial China. But small changes have been made, for example in the shape of 广 which is not absolutely the same in the Kangxi Dictionary of 1716 as in modern books. The Kangxi and current shapes have tiny differences, while stroke order is still the same, according to old style.