Mother-in-law is 70 years old and still likes to brag? That's why. /Why is this?

Your mother-in-law is 70 years old and still likes to brag, which shows that your mother-in-law has a good attitude, a good mood, a good mind and a cheerful attitude. If you live with such a mother-in-law, you won't feel tired, happy and oppressive, so your mother-in-law must like to stay and play with you young people, because everyone else is old and young.