They came to be called 'calligraphy saints,' and many calligraphers wanted to learn from works of them and successors of their styles, which led to a strong need for creating the hojo, a copy or reproduction of the works.
このため「書聖」とまで呼ばれた彼らやその流儀を受け継いだ人々の書を学びたいと思う書家は多く、その複写・複製である法帖の制作が強く求められた。