1995, three scientists, Dorrit, Akasi and Gilbert, published a paper entitled "There is no human Y chromosome polymorphism in ZFY region" in the authoritative American scientific journal. After the discovery of Y chromosome Adam in 2000, Spencer Wells, an honest evolutionist, admitted after studying the evolution process: We finally crossed all kinds of obstacles and can go back thousands of generations. At this time, we found that we had no choice. As a whole, human beings are all included in a pedigree, one from the Y chromosome back to Adam and the other from the mitochondrial DNA back to Eve. When this pedigree originated from chaos, we have no way of knowing. At present, people all over the world are descendants of M9 1, M60 and M 168. Most people in China are descendants of Shem. The research is still going on, and articles can be found online.