1. Fairness: When parents have two children, they must be fair and just when dealing with problems. They must treat the children the same. They must not be partial to pampering and doting on the younger ones, and criticize the older ones when something happens. Yes, the older one will not be allowed to make concessions to the younger ones, and it is always emphasized that the older one should make concessions. This is wrong. The two children must be taken into account in daily clothing, expenses, and snacks, otherwise the older one will be disappointed. , will break his heart, and even cause disharmony between the two children. 2. Reason: Parents must adhere to principles. When dealing with children's harmonious matters, they must convince others with reason. They cannot use their parents' airs to suppress others, nor can they just yell at their children loudly. They should work hard to let both children know that they are wrong. Wherever you go, you can’t just criticize one, but educate both.