In the past, posting was made with 7 cm or 9 cm grid paper. I always thought that no matter what font or copybook, I could write with this size grid, and I always did.
I was lucky enough to learn calligraphy from a professional calligrapher before I realized that this was not the case. Not all copybooks can be written in the same size grid. Both big characters and small characters have their own structural characteristics. It is not advisable to write in lowercase letters or enlarge lowercase letters into uppercase letters. Moreover, some inscriptions with the same size but different styles can be enlarged, while others cannot.
For example, the teacher told us that it was also an official script and a Han tablet. The rough "Zhang Qianbei" is the biggest you can write. It looks good. The teacher once asked us to write a word in the newspaper for practice; But the beautiful "Cao Quanbei" can't be written in large letters. If you zoom in to 10cm, the charm of the original post will be lost. I especially like the style of "Cao Quanbei" and try to enlarge it. The effect is really unsatisfactory.