The Wu-feng Myth, which was created and manipulated by political authorities and adopted in the textbooks for primary schools for decades, has been deleted from textbooks since 1987 after causing social tension among ethnic groups. But the negative images to the Aborigines still prevail through out the whole society. In this myth, the mainstream Han Chinese Wu-Feng was depicted as being so selfless that he even sacrificed himself to dissuade the barbarian Aborigines from the cruel head-hunting ritual. Finally, the Aborigines were so moved by his great behavior, they voluntarily submitted to the great Chinese culture. But actually, this myth is nothing but a mixture of exaggerated history and fiction, providing cultural delusion rather than illusion. The Aborigines were a scapegoat, which represents the dark and ugly sied deep within the great Chinese culture. By deleting this ugly side which was projected to the Aborigines, Han people seem to avoid the need to scrutinize Chinese culture anymore. Han are contented with their great culture. Since this myth was delivered to young generations for decades, most Han people have lost the ability of cultural self-reflection. This would be a symbol of potential possibility of group psychosis. This study argues that only if we scrutinize the dark side within us thoroughly, will we develop a healthier group ego ideal. The Wu-Feng Myth might be a very tiny mirror; however, if we recognize this historical and cultural mistake, and then treasure this precious experience, our society will develop that healthier group ego ideal.