Grooved copybooks can help you practice calligraphy well.

The groove copybook is a calligraphy training tool. Its main function is to help beginners master the writing of glyphs and strokes. By tracing in the grooves, beginners can better perceive the direction and weight of each stroke.

Although grooved copybooks can be used as an auxiliary tool for calligraphy practice, if you want to truly improve your writing skills, you need to use other calligraphy practice methods.