Although nevus is considered as a kind of defect, it has certain scientific basis. The formation of nevus is closely related to heredity and the development of head and face in fetal period. Therefore, the boy's mole is not due to lack of nutrition or bad looks, but is influenced by innate genes. In addition, the personal fortune, living environment and mentality of boys may also affect the meaning of villain moles.
Although nevus is considered to be closely related to good luck, it can't be a sign to predict boys' future achievements. Man's fate is the result of many factors, and the villain's mole is only one of the five senses. So there is no need to be overly superstitious about the villain's mole, but should be down-to-earth and diligent in pursuing success.