I am born after 90, but I am not an only child. There are three brothers and sisters at home, so they often feel inferior and are afraid of being laughed at. What should I do?

You are not an only child. This is not your problem, and it is not something you can decide. This is something that your parents can decide. You have an elder sister above and a younger brother below. Your parents have given birth to three children. It seems that your parents are a little old-fashioned and always want a boy. You and your sister are both girls. Therefore, their parents decided to have another one to see if it was a man or a woman. As a result, your brother was born. When you grow up and your parents are old, it is much better for you three to honor them than being an only child, then you can feel the warmth of your family. Well, I wish you happiness!