It is actually a natural phenomenon of the human body. There is a beautiful legend here: before the flood in Laohuai Village, Shanxi Province, people rushed out to avoid disaster. Under the big pagoda tree, in order to recognize each other in the future, they covered their little toenails with sickles and marked them. Later, these people scattered all over the country. It is said that there used to be many religions in Anyang, Henan Province, so the toenail covers of Anyang people were mostly separated. I come from Anyang, so I don't think so. It's not a lack of trace elements, nor is it morbid. In fact, this is a natural phenomenon. For example, the phenomena of African blacks, Asian yellow people and American whites are all determined by geographical and climatic factors. Now it is a scientific society, not a superstitious society. We should speak with facts and stop slandering us who are separated by our little toenails.