Since ancient times, people have regarded the words written by calligraphers as "Mo Bao". "John" originally meant bird feathers, and in ancient times, feathers were used as pens, so it was called John. In Li Dongyang's Poems at the Foothills in the Ming Dynasty, there is a phrase "generous to guests, extremely clever".
"Artemisia arrow" is a kind of arrow, named after the shaft of the arrow is carved out of straw. It means a stroke of the pen, illness is like an arrow leaving the string, and the speed is fast.
"Swing one's hair" refers to writing with a brush. It is natural to dip a pen in ink when drawing a book, so it is also called "dyeing".
"Tube" generally refers to a slender cylindrical object, and the calligraphy term refers to a writing brush, so writing a book is also called "manipulating tube", "grasping tube" and "grasping tube".