We mothers all know how lazy our son is. Don't say that your son is busy and you want your daughter-in-law to do housework. He is busy chatting QQ and playing games. You actually know it in your heart.
Don't let your daughter-in-law take care of your son like you do. He is your son and your wife's husband. Her daughter-in-law will only treat him as a husband, not as a son.
Don't speak ill of your daughter-in-law in front of your son. If you do this, you will only make them quarrel endlessly. Finally, the last straw is divorce. If you divorce because of you, you will be guilty.