Maybe the mother-in-law thinks that this way is not suitable for you. The child is her grandson, so she will intervene in the way of educating her son and daughter-in-law. You are not happy about your mother-in-law's intervention, because the child is her grandson, so you should understand the mind of the old man! Listen to good opinions, listen to the kind intervention of the elderly, and first of all, as parents, review whether the education method is correct. Is it correct to look at yourself objectively?