As a general logic, Das Kapital summarizes the development process and movement form of the unified historical object-capitalist society. The third volume, as the occurrence of the phenomenon and the birth of the first and second volumes, reveals the "secret" of the existence of capital: 1-3, the process of concrete growth of value into capitalist price, and explains the one-country system of economic profits; 4-6 articles illustrate the polymorphic system of economic profit-the realistic expansion mechanism of the downward trend of profit rate with the social growth process of "class struggle I"; The virtual movement system of economic profit is explained by the deepening form of the social growth process of "class struggle ⅱ"-the decline of profit rate. The last part reveals the stipulation of bourgeois epistemology by freezing the image of class life-"distribution illusion" and its elimination process. The research shows that political economy criticism and class analysis belong to the same methodological category, aiming at eradicating the influence of "pseudoscience" on economic theory construction, ending "vulgarity" and restoring science to a revolutionary force to promote historical growth.

Capital Volume IV: Cognitive Genesis. Contemporary Economic Research,No. 12;

The practical logic of the fourth volume of Das Kapital is: the cognitive mechanism of category occurrence. In this sense, it makes the category of "production" practical, and mainly implements the principle that "knowledge" is produced by "history". The interaction between the historical part and the theoretical part constitutes the general writing logic, and the historical part establishes the theoretical guidance for the follow-up research. Methodological implication is: (1) according to the "natural growth" of historical mode of production, reveal the physiological structure of category-(surplus) value core; (2) Revealing the historicity of "structural growth" from the hierarchical movement of category production; (3) Through the overall production of "theory", the internal combination of methodological criticism and epistemological criticism is displayed to the maximum extent, which reflects the actual working route of political economy criticism. Therefore, Kaucki's wrong request to illegally compile the history of surplus value theory was rejected. On the whole, Das Kapital unified "two kinds of epistemology", that is, the logic of history (development) and the logic of cognition (development), and unified the methods of history and category. This holistic research sets a good example for the methodology of political economy. Let's paddle "China Marxism+China Economics".

Marx's voyage is from "history" to "logic" and then to "history". Its internal method, logic and working discourse are "the genesis of historical materialism", which is the working context of Marx's "My Dialectical Method" under the condition of China. Therefore, we can combine the classic works of agricultural history-Tao Te Ching and the classic works of industrial history-Das Kapital. The production process of Das Kapital can be described as the "logic" of historical genesis; The circulation process of capital can be described as the "logic" of the history of development. The general process of capitalist production can be described as the "logic" of phenomena. The theory of surplus value can be interpreted as the "logic" of cognitive genetics. Explaining the historical development process constructed by the unified provisions of these "history" contents and forms sublimates the working logic of Das Kapital.

The artistic height of Das Kapital: social objective criticism. Generally speaking, the difference between the research method of "seamless connection" between Das Kapital and historical development and Hegel's method is that it dispels the fog of "structuralism" hanging over its head while accepting the critical provisions of dialectics, and as a result, it dispels all bourgeois "cognitive fog"-formalism, scientism and idealism of knowledge production. The logic of Das Kapital is only "difficult", which is hard for ordinary readers to understand, so the road of "popularization" is inevitably full of "all kinds of misunderstandings"! In view of this, we need to go out of pure text research and seek its "logical essence" by restoring the text to the "historical context", which is the so-called "interpretation and application of historical materialism in the text" (Xu Guangwei, 20 15) and the realization of "scientific interpretation: historical materialism method" (Zhang Zhidan, 2007). This article is a comment on my book "Defense-An Outline of Social Theory of Economic Form" (20 14a), and it is a monograph on the writing theme and introduction of the book. The main purpose of this book is to reveal the following three basic problems of China's political economy by pursuing the practicality of research work and the China of narrative style: first, strictly distinguish the research object of political economy from the research object of political economy; Secondly, from the methodology of political economy, we can divide "things" and "things", and strictly distinguish "science of things" and "science of things" accordingly; Thirdly, the research on the historical process and the unity of dialectical narrative and critical narrative in the sense of "going home, going back to history and going back to China" have been realized. It can be seen that Das Kapital is not only a theoretical work, but also a historical book with dialectical narrative requirements. In the final analysis, it is a work system of social objective criticism of "writing history". The internal logical red line is "commodity criticism-capital criticism". This framework has nothing to do with scientific positivism, but lies in the internal analysis of "the way of value", "the virtue of value", "the way of capital" and "the virtue of capital", thus laying the foundation of "the study of things". This kind of research makes history an "object of practice" and produces knowledge, and further makes logic an "object of knowledge" and produces theory, thus completing the real departure from Kant's epistemology.