What's wrong with the current school teacher? My brother had a calligraphy class in the first day of junior high school. The teacher didn't teach calligraphy. When he came back, he only taught pens to

What's wrong with the current school teacher? My brother had a calligraphy class in the first day of junior high school. The teacher didn't teach calligraphy. When he came back, he only taught pens to write calligraphy. According to the regulations of the Ministry of Education, schools must teach calligraphy. But there is a serious shortage of calligraphy teachers. In order to complete the task, I guess it's your brother's teacher. He has never studied China's calligraphy. Maybe the pen handwriting is better than other teachers, so the school leader asked him to teach calligraphy. However, writing with a brush is completely different from writing with a pen. The brush is soft and the pen is hard. Its teaching methods are also different. How can teachers teach students if they don't know how to write a brush?