In the eyes of mother-in-law, is there really a big difference between daughter-in-law and daughter?

Yes, a daughter is a daughter after all, and there is still a difference between her and a daughter-in-law.

Mother-in-law and daughter-in-law will get along more carefully. As we often say, when a daughter-in-law gets along with her mother-in-law, it is difficult to be as comfortable as when she gets along with her mother. As a daughter-in-law, you may be more careful about your words and deeds in front of your mother-in-law.

In fact, many mother-in-law are also. I've heard many aunts say that what's wrong with my daughter, just say it if you want. Even if they are flushed, no one will remember how the mother and daughter should get along or how to get along.

But with my daughter-in-law, I am afraid that I have said something wrong, and I am even more afraid that I have done something wrong. My daughter-in-law will be unhappy, even more afraid of any conflict with her daughter-in-law, so that her daughter-in-law will have opinions, and there will be barriers and contradictions between her mother-in-law and daughter-in-law in the future. So it is not easy for both mother-in-law and daughter-in-law. What they can do is to understand and tolerate each other.