the answer is regular script.
Oracle Bone Inscriptions is one of the oldest characters in China. Its prototype is ancient symbols. Because of its roundness, seal script is derived.
seal script is one of the most historic scripts, and it is basically used for engraving chapters or writing ancient Chinese.
anyone who knows history knows that before the feudal period, it was the slave period, which directly means that all people were in the relationship of master and slave. Only those who are above can write seal script, slaves can't write, and if they are found, they will die.
So the slaves created a font similar to seal script-official script. Of course, only lowly people can write it.
With official script, regular script became popular in Yan Zhenqing's time. I believe everyone who has learned calligraphy knows that when learning calligraphy for the first time, you should start with official script before learning regular script.
With regular script, in order to facilitate writing, people speed up on the basis of small script, which leads to the connection of strokes. At the same time, the thread of strokes in regular script is written out, and a running script is formed.
after the appearance of running script, people made a "flowing" modification on the basis, and formed cursive script.
Line, Kai, Li, Zhuan and Cao, these are the evolution of the five styles.
I'm a 12-year-old boy. I've been studying calligraphy for six or seven years. Please forgive me for the shortcomings!