As Wen Quan remarked in the 8th issue of the Journal of Humanitiesin 2022, taking "exchange value","average profit" and "interest-bearing capital" as the skeleton of the argument, Marx provided the basis of "genesis","process theory" and "teleology" for the inevitable demise of capitalism at the realistic level. As key topics of "Das Kapital", they are three progressive levels of Marx's understanding of capitalism: the representation of epistemology on capitalism, is not only the historical materialism basis for confirming "self-construction" of capitalism from the ontological dimension, but also the source of historical materialism material for the "self-sublation" logic of capitalism. This means that, in contrast to “to-be” of the concept "where capitalism comes from" as Marx interpreted with the socialization history of monetary power, we should constantly confirm “ought-to-be” of the logic "where capitalism is going" in the practical history of social individuals, so as to realize sublation of capitalism by communism.