First, the draft paper is folded in half and the draft is partitioned. When drafting, write the title number and mark the position of the draft;

Second, don't write too full draft paper. Leave some spare places for reading. A full page of draft paper often makes people look big.

Third, try to write a draft in one direction, don't write the first half, and turn the manuscript paper sideways to write the right half. ...

Fourth, keep the draft paper of common exercises;