What features and characteristics of calligraphy does the work "Mid-Autumn Tie" reflect?

"Mid-Autumn Tie" is a paper version with 3 lines of cursive writing and 22 characters. Qianlong regarded it as one of the "Three Treasures" and is now collected in the Palace Museum. Wang Xianzhi's continuous "one stroke" cursive style is fully revealed in this post. Because some people say that Mi Fu is good at copying ancient calligraphy, and that he uses his own forgeries to pass for authentic ones. His works have the style of Song calligraphy, but they lack the charm of Jin people.