How to appreciate the structure of a photo, and what powerful photographic works are there?

There are only two ways to make a pleasant clock vibrate and resonate in the human body: 1 and comparison. 2 similar. The so-called "ABA" principle in design. AB stands for comparison and AA stands for similarity. One of my writing friends talked about the so-called "confrontation and balance". The simple method is to confront each natural segment with the next natural segment (tone, tonality, rhythm and tightness) and complete the "balance" with the subsequent natural segments. Contrast and similarity are physical. This means: when a teenager grows up, throw him a camera, just as he 18 gave him a girl. Intuitively, he should be able to discover the essential secret of composition, if he is sensitive enough and full of courage. I don't agree to divide the composition into "S" or "cross" according to any classification method. This dogmatic classification may be instructive to cultivate beginners' feelings, but it prevents people from discovering more essential composition secrets. This secret is not a word or a certain, rigid "knowledge", but a quick and sensitive intuition of "comparison and similarity" cultivated by the biological clock in constant beating and vibration. I don't agree to quote the introduction and analysis of any so-called photographer in China in the sense of communication. Their general quality is very low, and they only rely on creating a halo to compete who has recently sold more second-hand textbooks and bestsellers. The best way is to buy master's picture books, or search their works online, without any foresight. I don't believe these so-called experts find that they can't get any beneficial nutrition from them (introducing second-rate figures like ansel adams). On the contrary, relying on their own instinct and practice, they get much more than what they introduced. For example, composition, I have never seen a reliable definition. If I can sum up one according to my experience and rationality, I think:

Composition is the formal relationship between lines, geometric figures and crop box figures.