On the one hand, it is a primitive, fragmented, savage and dangerous Africa; On the one hand, Africa is strange, natural, beautiful, full of freedom and nationality. Under such complicated historical torture, the author has never given up that Africa is by no means isolated from the world. Africa and Africans have played a long-term and important role in the process of world history and civilization, and their influence on other parts of the world and other regions has never stopped. Those Roman culture, Greek culture and Jewish culture can always find the brand of Africa. The author firmly believes that a better understanding of African history means a better understanding of world history, and for Africa, Africans and African history, no matter how fragmented and untrue our so-called "African impression" is, it is still a starting point for us to truly understand Africa.