How old is a calligrapher who writes best?

Under 55 years old. Authors under the age of 55 are in the middle and young age, which is the golden age of calligraphy creation. "At the age of 60 or 70, the way of thinking and creative techniques are easy to solidify, and the level of calligraphy creation tends to be stable. In the long historical development process, China's calligraphy has formed a unique and profound national art. Generally speaking, calligraphy can be divided into five styles: seal script, official script, regular script, running script and cursive script.