2. Interpersonal communication ability includes language and non-language, attitude and respect at the cognitive level. You can go to Huiyun psychological website to inquire about relevant psychological knowledge.
3. Many skills come from life and can naturally be applied to life. But I don't know what kind of skill you are talking about, or is it embodied in explaining life?
The external expression of emotion is usually called expression. It is a quantitative form of body movements when emotional state occurs, including facial expression, posture expression and intonation expression. Facial expression pattern can express different kinds of emotions in detail, so it is the main symbol to identify emotions.