Inspired by the disgust of the behavior of "bear children", we explore the nature of human nature. Human nature is the instinctive desires we repress deep inside us without realizing it, and these instincts drive us to seek pleasure, and we have become bad before we receive various kinds of education. Many people like to derive pleasure and excitement from destruction, such as stomping on bugs, dissecting dolls, and destroying toys. Adults can determine whether such behavior is good or bad, but infants cannot. Through the study of instinctive psychology, pictures are used to express the social attributes of human's acquired nature and incontinence instincts.