It can be seen from this move that this brother loves his sister more and hopes that her sister can protect her arm after the injection, so he would rather be laughed at by others than choose to change clothes with her. Even though I was a little embarrassed after changing clothes, I could still see that my brother's expression was still very happy. After all, he is protecting his sister. In fact, it can be seen from this point that the relationship between two people, whether brother or sister, is actually very good. Many people are only children and want to have a brother or sister. This behavior is normal.
Because there are brothers and sisters who grew up together, the two people are very close and can solve each other and talk to each other. It is very good for the growth of children, but if you want to choose to have a baby, you must discuss with the last child and tell him that mom and dad will love the two children equally.
In this way, they will have a happy mood instead of worrying that their parents don't love them. As long as parents can handle the relationship between brothers and sisters, then brothers and sisters will become very close.