What is it like to be one quarter Asian? Chinese, Vietnamese and Tai peoples were found intermediate between the N. Red Asian facial traits and Mongolia Birth Marks About half of all Asians lack an active enzyme which breaks down acetaldehyde, a toxic chemical derived from ethanol found in most forms of alcohol. But unfortunatelymalignant melanoma, the deadliest form of skin cancer, is more common among lighter Asian facial traits people than darker skinned ones. What is their face shape like? Int J Hum Genet.