Quentin Pan was the famous eugenicist in modern China.He did not argue simply against Marry-early,Intermarry and Same surname marry as some scholars declared.
Eugenicists sought, by combining, in the words of J.B.S.Haldane, the offices of “the policeman, the priest and the procurer”, to control both the actions of their social inferiors and the course of evolution.
Between the 1880s and early 1900s, a subgroup of eugenicists in the United States rejected these ideas and thought that a mother's mental state during pregnancy would be permanently imprinted on her child.