As long as he teaches you seriously during the class, he can teach you seriously during the class. Besides, his willingness to teach for free is also his personal problem, which has nothing to do with you, and he didn't say that she isolated you! In fact, it is more about what you want. Didn't you say that you signed a labor contract with him and he had to come to you wholeheartedly? He has his freedom. Your requirements may or may not be high, depending on what you want. See what you decide. Of course, I still have that attitude. There is no problem that she is willing to teach others for free. As long as she gives you another lesson, it won't affect your lessons during the period.