Emotion is people's attitude and experience towards objective external things, which must be reflected through emotion. Without emotion, feelings cannot be expressed.
Take the mother's feelings for her children as an example. She can express her love, care and understanding for her children through external language and behavior such as smiling, caressing, intimacy, encouragement and praise. These are positive emotional expressions, which can make her children feel safe, so that "Little Rabbit" will not only not escape, but also be very eager to be with her mother.