What is the artistic charm of Wang Xizhi's preface to Lanting? Write a 3-word paper to help.

Wang Xizhi's calligraphy is characterized by exquisite brushwork and changeable structure. Wang Xizhi's greatest achievement is to increase and damage the ancient law and change the simple calligraphy style of Han and Wei dynasties into a delicate and beautiful calligraphy style. Wang Xizhi's contribution lies in that he changed Chinese character writing from practicality to the realm of paying attention to technique and interest.

Wang Xizhi's masterpiece Preface to Lanting is a running script. Known as "the best running script in the world" by the calligraphy circle, Wang Xizhi has been honored as "the book saint" by later generations because he has dumped countless book learners for thousands of years.

The Preface to Lanting combines the pen with Fiona Fang, which is both rigid and flexible, rigorous and chic. The graceful and thin writing style represented by Lanting Preface is very popular in later generations.