Is the grid stroke training copybook useful?

Useful.

Pen control training is useful for practicing calligraphy. Throughout the ages, no one can bypass the pen control to achieve the goal, whether practicing standardized characters or wanting to learn calligraphy. Practicing pen control in the early stage is to correct the wrong pen holding posture, and in the middle stage, you can achieve the ability of copying. Continuous and in-depth practice can make your words more beautiful and become your own unique symbol. The first and second grades of primary school are the best time to practice calligraphy and lay the foundation. Wrong pen holding posture will not only affect writing speed and learning efficiency, but also deform our bones and aggravate myopia.

Useless in other words, useless to learners and useful to sellers.

Yes, this training can make our arms more stable, and then, for example, in medicine, give me a better psychological state and state when we do something with a knife. Is to keep yourself in a good state, and then defeat the enemy without fighting, operate on patients without fear, and think about the life and health of others.