What is the scientific basis for the ancients to say that "each phase is born from the heart"?

For what? I believe the relationship between heart and heart is often mentioned by the older generation, because people who are kind-hearted at ordinary times will think that such a face looks gentle and warm when they think of it, but if they are evil at heart, there will be evil things on their foreheads, while those who are wretched at heart are actually similar in appearance, so in ancient times, fortune tellers generally used this as a basis for fortune telling.

People can only see a person's mood from external factors, because when a person is happy, angry, sad or afraid, he usually sends a signal to the outside world through his face, which can naturally evolve in this aspect of his personality. For example, if a person is a very honest person, you usually think he is simple and honest at first sight, but if a person's behavior is unfair, it is because of something inside, which is natural.

How does a person's mentality often affect his appearance? Here is not the beauty and ugliness of his appearance, but the overall feeling. As I said just now, a person's emotions will show his face to give an external signal, but eyes are actually ok. Just as we say that eyes are the windows of the soul, eyes can usually express inner feelings, because eyes are often difficult to hide, just like a simple person.

So for? The relationship between heart and heart still makes sense, because people usually express their inner feelings through their faces, so after a long time, natural faces will become the same as their inner thoughts, especially some people are gloomy. Because of long-term frown, their natural appearance will tend to this direction. So what? Heart-to-heart relationship still has certain scientific basis.