Eat breakfast after breakfast. There is no breakfast activity in the content of morning self-study, so you can't eat breakfast in morning self-study. This rule is not too much. Change roles. What would you think if someone else was having breakfast? Of course, you think that morning self-study is not a study time, or eating breakfast while studying will not affect your study, nor will it affect others' study. So you can have breakfast today, and I can have breakfast when I study by myself early tomorrow. Since everyone can do it, I think morning self-study will turn into breakfast class sooner or later. People living in the world, whether students or adults, living in any circle, although growing up at any stage, should accept the rules of the situation. Rules not only bind themselves, but also bind others. In the same way, rules protect others and protect themselves.