Related to calligraphy, in the past, characters were written on bamboo slips with a brush, because usually the right hand was used to write, piece by piece. After a bamboo roll was opened, the rolled end was placed on the left side and unfolded. is placed on the right, so ancient texts were written from right to left. The current writing method was introduced from the West. Westerners use quill pens to write horizontally and from left to right to avoid smearing the wet ink. The origin and development of Arabic characters are similar to those of Chinese characters.