First of all, parents have different ways to educate their children.
Although parents love each other, their feelings will fade with time. Growing up in different families, we have different views on things. My father is usually more rational and my mother is more emotional. When the child is wronged, he doesn't want her husband to severely criticize the child and will stop him. Husband's behavior will be terminated, his prestige will be challenged, and children will not worship their father as a god. There will be disputes between the two sides, and grumpy parents will quarrel, even if the children obstruct it, it is difficult to stop it.
Second, what should I do?
We can discuss it in private. If two people hold their own words, there will be a fierce quarrel. There is no need to continue arguing, and the other party may not listen to what he says. When two people think their methods are very good, they should take a step back and try to solve the problem with each other's methods. Don't completely listen to other people's opinions. One can't do everything right. Respect each other when discussing. Don't let the other person think that you are particularly autocratic. When educating children, one person has the final say, two people will form an unequal relationship, and the other person will feel disrespectful.
In a word, it is understandable that two people make such a contradiction for the sake of their children. Don't quarrel because of educating children, there will be one more family conflict, so we should straighten out the relationship between the two before discussing.