地球上的居民大体分为蒙古人种、欧罗巴人种和尼格罗人种（Negroid），简称为黄种人、白种人和黑种人。中国古代的居民，除了主体的黄种人，新疆等地及由西域来华的白种人以外，是否有过黑色人种？这是中国人种史和中外关系史中一个很重要而值得研究的问题。明初学者叶子奇记元 The inhabitants of Earth are broadly divided into Mongoloid, Europa and Negroid breeds, referred to as Yellow, White and Black. Are ancient Chinese residents black people apart from the main yellow race, Xinjiang and other white places and the white people coming to China from the Western Regions? This is a very important and worth studying issue in the history of Chinese race and in the history of Sino-foreign relations. Beginner scholars leaves odd dollars