WOW! How you go from chest voice to head voice at 0:43 is so beautiful and memorizing. I think this is my favorite song you've done so far! 你唱得真好! (抱歉我的中文不好)
Match teacher is a joke, don’t take it seriously. She was a music teacher, and do math lessons when math teach absent, but it was many years ago. Now, as you can see she’s a online singer