Is Mo You's calligraphy teacher a professional?

At present, the teaching quality of many online courses is quite good. My son has been studying the third grade course of Mo You's calligraphy all the year round, and now his standard calligraphy is fast and good. I've heard of them before. Many primary schools in Qingdao have been carrying out calligraphy teaching for 10 years, and teachers' calligraphy level is relatively high. Bringing so many years of offline experience to online courses is not only novel in form, but also professional in speaking.