Physiognomy clearly reveals the state of mind that comes from genetic factors and the environment. Therefore, if you know how to read physiognomy, you can first understand yourself and then understand others, which can help you have smooth interpersonal relationships.
People often say, "I like someone at first glance, but I don't like them," but this is already looking at their physiognomy.
For those of you who are already physiognomists, learning more about physiognomy through this book will greatly improve your future relationships.