But I found he is not a very responsible and good coach. He is the engaged table tennis coach of my son's school. My son had joined his class at school before and I just found that it was a waste of time and money. The class was not well-organized, and I saw him just let the students playing the table-tennis themselves without teaching them, or let them play around the place without order. Therefore, I did not let my son join his class at school again. Maybe 私鐘 is better as the coach fee would be much more.