Thank you for your answer. After reading your explanation, it gives me a new understanding of the film.
In these two films, the social status of women is not very high in both China and the United States. This shows that their voice and credibility in society are very low. So they need to rely on some external conditions to get others to believe them and do what they say.
As a female, Catherine has no voice and credibility. She has to rely on the school she works for to have the prestige as a teacher. Once she does not act in accordance with the rules and regulations of the school, or even opposes the educational philosophy of the school, she will be questioned.
Similarly, Wang Cailing is respected by others because others can benefits from her. She does not really gain respect.
Therefore, what these two films have in common is to tell us that we should judge a woman based on her own talents, not on her wealth and beauty, and on whether the man she marries is good or not.
I hope there are similarities in our views. I look forward to your reply.

Yours,
Lin