The ancients once said, "Learning calligraphy is expensive and changeable". Mastering lifting, frustration, Xu Ji and some transitional skills in calligraphy can make the lines change. By pressing the pen, the lines can be "as heavy as a cloud", and lifting the pen can make the lines "as light as cicadas", giving people a sense of change and ups and downs, thus highlighting the unique aesthetic feeling of the works. The official script is staggered and the regular script is dignified and vigorous. The running script is strewn at random, which makes it unconstrained and unconstrained. The cursive script is graceful and graceful, which makes the whole story gloomy and magnificent, and all of them reflect the harmonious beauty of lines.

Twenty-one "zhi" characters in Preface to Lanting have their own modality, vivid images, and are like natural carvings, and are known as the best running script in the world. The form of calligraphy is extremely changeable, neat and well-proportioned, uneven level is empty and clear, impenetrable, and the form is essay-written. The words are born with the situation, showing a myriad of weather and customs. For calligraphy appreciators, only by combining lines with the form, can calligraphers put their sincere and strong feelings into the realm of their works, so as to make viewers feel moved and produce ideological and emotional sounds.