Recently, in one class, I managed to explain the curriculum in such a way that it was understood even by a child who had struggled with it for a long time and did not understand it. In fact, I felt more happy than the student. But I didn't mind at all. I don't think he wanted to show his joy in front of his classmates, even though they supported him very nicely and were happy with him.
In fact, I felt more happy than the student.