How can I know whether the hard pen calligraphy teacher teaches well or not? Thank you ~ ~ ~

First of all, see if he (she) graduated from a painting and calligraphy art college, whether he (she) has systematically studied calligraphy and other knowledge, and whether he (she) has mastered certain writing skills. The second is to see if he has won any prizes in some calligraphy competitions, or to judge his calligraphy level by looking at his own calligraphy. If he is also a beginner, how can he teach students well? Third, it depends on whether the textbook has content. Generally, calligraphy teaching should start with basic strokes, then explain fonts and structures, and finally train composition. Of course, we should also understand the knowledge of calligraphy, but how to write well depends on the quality of teaching and whether it is in place; The second is personal efforts and uninterrupted practice.