The ancients once said that "learning books is expensive and changeable." Mastering lift, frustration, Ji Xu and some transitional skills in brushwork can make lines change. Pressing the pen can make the lines "as heavy as clouds", 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. Official script is strewn at random, regular script is dignified and vigorous. The running script is patchy and unconstrained. The cursive script is elegant and smart, which makes the whole story gloomy and magnificent, and all of them reflect the harmonious beauty of lines.
The 2 1 word "zhi" in Preface to Lanting has different forms and vivid images, just like natural sculpture, and is known as the best running script in the world. The form of calligraphy is extremely changeable, neat and symmetrical, uneven and ethereal, impenetrable and rough, and the characters are born with the situation, showing thousands of meteorological customs. For calligraphy appreciators, only by combining lines and shapes can calligraphers put sincere and strong feelings into the realm of their works, and can the viewers be moved and produce thoughts and feelings.