What is incorrect about Cao Zhang?

About Cao Zhang, it is incorrect that Cao Zhang's chapter points out that there are rules. According to the relevant information disclosed in the inquiry, Cao Zhang, one of the traditional calligraphy styles, is an early cursive script, which began in the Qin and Han Dynasties and evolved from a cursive official script to a standard cursive script. Cao Zhang is the predecessor of today's grass, which was produced in the late Eastern Han Dynasty and changed from Cao Zhang.