I don't know much about the calligraphy training class in Sanxia. I am in Beijing, and I am also learning calligraphy from my teacher. Personally, it is best to learn calligraphy from my teacher, and he is a teacher who graduated from calligraphy. They can teach you more systematically. You may hear others say that someone's elder or friend's handwriting is good, but that's just what they think. The so-called experts watch the doorway, laymen watch the excitement, and those who really write well are those who have profound skills or have received strict guidance. In addition, tools are also very important. First of all, if it's paper, it's ok for beginners to use edge paper, that is, edge paper with Mi Zige. I think the pen should be the most important. If you want to buy a brush, you can use one of the top ten brushes in China. I hope it helps you.