Brother protects sister. This is called a brother to protect his sister, and a brother is like a father. Big brother is like a father, sister-in-law is like a mother, proverb. It means that after the death of parents, eldest brother and sister-in-law raised and educated younger brothers and sisters like parents, and younger brothers and sisters respected them. Interpretation of the old saying After the death of parents, eldest brother and sister-in-law raised and educated younger brothers and sisters just like parents, and younger brothers and sisters respected them.