Old-fashioned Copybook for calligraphy, what's its name from the tombstone?

This form of copybook is called a copybook.

Beto (pronounced bēi tà): It is a printing technology that appeared in the Southern Dynasties, and it is the representative of China traditional culture. Before the birth of printing, many ancient words were written on stones. Rubbing is to cover the words or graphics on the tablet with rice paper, then wipe them clean with ink, then remove the paper and leave the words or graphics on the tablet on the paper. There are many forms of stele extension, such as Wujin extension, cicada extension and Zhu Tuo extension. The stele extension has a long history. Its appearance provides conditions for the production of block printing. The stele extension bears the important mission of cultural development, which is of great research value to the study of historical documents, cultural relics, calligraphy and painting, and is an important evidence of historical development.