What if my sister and brother fight?

First separate, then separate. Say to your sister, "I know you are your sister, and you won't beat your brother for no reason." He must have made you angry? " We agreed that you can let him do it twice, and the third time he won't have to put up with it. Let him know that he can't hit anyone casually, even his sister. ""Then he said to his brother, "This young man is very strong. He can fight with his sister. He is in good health! But I also told my sister that she would spare you, but if you keep provoking her, she will really hit you! "