Problems; What is contradiction, how to understand contradiction and how to reflect the fundamental contradiction of things? I've always heard about contradiction analysis, and I've always known that Grandpa Mao taught us to learn contradiction analysis, but how can we understand it correctly?

Lenin said that dialectics is the essential contradiction of the research object. Engels said, "Movement itself is a contradiction." Lenin defined the law of unity of opposites as "recognizing (discovering) that all phenomena and processes in nature (spiritual and social) contain contradictory, mutually exclusive and contradictory trends".

Lenin said: "In the initial sense, dialectics is the essential contradiction of the research object." Lenin often called this law the essence and core of dialectics.

It can be seen that contradiction is movement, which refers to the process of things moving. This process includes one or more pairs of aspects of things, which are opposites, struggles and unity. Because they are transformed into each other in the process of movement.

In the process of mutual change of quality, they are temporarily unified before the qualitative change, and after the qualitative change, they are a pair of contradictory quantitative changes. Quantitative change is the most obvious direct struggle and the unity of qualitative change. Qualitative change is the strongest struggle and the unity of a pair of new contradictions.

Then, due to the mutual change of quality, the form and content of things will also change, and the content is the unity of qualitative change and quantitative change. Form is suitable for the development of this content, and form and content are unity of opposites. When new content is produced, they will show struggle, old forms will be broken, and when new forms are produced, they will show unity.

Therefore, in the category of dialectics, the cause and result are inevitable accidents, and the essence of the phenomenon and the possible reality are unity of opposites.

Speaking of which, maybe we don't know how to analyze things with contradiction analysis, or why do we use this analysis method?

Our understanding of contradictions, our purpose is to understand things, in the process of understanding, we must maintain materialism, oppose idealism, maintain dialectical views, and oppose mechanical and empty theoretical views that are divorced from reality. Having said that, I think I have a clearer understanding of the purpose of studying and adhering to materialist dialectics. We should study the contradiction in the essence of things, because the contradiction in dialectics includes the understanding of materialism, which is the world view. Because dialectics emphasizes the unity of opposites, it is different from formal logic, which is our methodology.

Therefore, when we realize the nature of the research object, it is natural to summarize the nature of contradiction through the contradictory movement in the phenomenon. According to the essence, let's explain. We know what we do.

One topic here is that because we know the essence through many phenomena, it is different from other schools of epistemology. We know the essence through phenomena, test the laws of essence through practice, and obtain the latest phenomena through practice, which is a new understanding of essence. Therefore, the epistemology of dialectics cannot be divorced from practice.