What is the idiom to describe "research"?

Don't seek a solution? Just look at it and you'll know? A humble head and a poor classic? Today's hair is thick and thin? Thick today and thin ancient times? Study deeply and carefully.

1.

Interpretation: very: very, very. Just a rough idea, not a thorough understanding. Often refers to the study or research is not serious and in-depth. ?

Source: Qian "Biography of Mr. Wu Liu": "I don't want profit, I like reading, I don't know much, and I forget to eat every time I know."

Learn from the past

Interpretation: If you study the past carefully, you can speculate on the future.

Source: "Liezi Fu Shuo": "Therefore, saints see it and know it from the past, so they are prophets."

3. Are you poor?

Interpretation: Hao: Bai; First: hair; Poor classics: concentrate on learning classics and ancient books. Until Laobai, I was still studying classics and ancient books.

Source: Tang Han Wo's "Give a Step of Cuichu River Poetry": "The white head is poor and the secret is clear, and the green hills are dangerous."

4. Thick ancient and thin today

Interpretation: thickness: admiration, attention; Thin: to despise or neglect. Praise the ancient times and despise the modern times. Mostly used for academic research.

Source: "Zhuangzi Foreign Things": "The husband respects the past and is not as good as today, and the scholar is also."

5. thick today and thin the ancient.

Interpretation: thickness: admiration, attention; Thin: to despise or neglect. Attach importance to modernity and despise ancient times. Mostly used for academic research.

Source: Fan Wenlan's "Historical research must be thick today and thin the ancient": "Thick today and thin the ancient is the tradition of China historiography."

6. How deep is it?

Interpretation: research: research and summary; A few: subtle. It refers to exploring and studying the profound and subtle aspects of things.

Source: On the Book of Changes: "Fu Yi, a saint is extremely deep and has been verified several times."