One week of writing is an effective method of learning that was invented by mr. Zhao yi cai, a senior lecturer in the chinese association of hard letter calligraphy. It is based on ancient clerical theory, which combines modern writing habits and pens, edges, monographs, inter-structure 36 and 56 words, with eight characters running through all the characters. Trainees need only eight characters and some simple writing techniques to be able to easily master the typologies and basic writing techniques of han writing, so that they can have a good writing effect. One-week writing is intuitive, simple, easy to read, easy to understand, hard to react. It adapts not only to role models, but also to books; it adapts not only to pencils, pens, chalk pens, but also to hair pens。