The 10 famous sayings in the "Book of Changes" are as follows:

1. A gentleman keeps his weapons hidden in his body and waits for the time to move.

Explanation: A gentleman has great talents in his body, waiting for the opportunity to come and take action.

2. A gentleman should be careful with his words and eat sparingly.

Explanation: A gentleman is cautious in his words and moderate in his diet.

3. A humble gentleman is humble enough to shepherd himself.

Explanation: A humble and humble gentleman can restrain himself with a humble attitude even in a humble position.

4. Daily innovation is called virtue.

Explanation: It is great virtue to have new changes every day.

5. If you are poor, you will change, if you change, you will be general, and if you are general, you will be long-lasting.

Explanation: The extreme leads to change, the change leads to access, and the access leads to permanence.

6. Work modestly, and a gentleman will eventually die.

Explanation: A gentleman who is humble and meritorious will have good results.

7. A villain should use strength, but a gentleman should use recklessness.

Explanation: A villain prides himself on being strong, while a gentleman behaves by doing nothing.

8. The same voice corresponds to the same spirit.

Explanation: Only similar things can sense and attract each other. People with different paths do not seek each other. Only people who share the same goals and interests will come together.

9. Heaven is moving vigorously, and a gentleman strives to constantly strive for self-improvement.

Explanation: The law of heaven runs day and night without stopping. A gentleman should follow suit, work hard, persevere, and never stop.

10. No matter what happens, there will be no return.

Explanation: There is no one who only criticizes the slopes, and there is no one who only goes there but does not return.

The categories of Yi books in the "Book of Changes":

1. Lianshan

"Lianshan" is the earliest Yi study system in China and the first of the three Yis . According to ancient documents (Lu Shi, Preface 2, Emperor's Chronicles of the Song Dynasty), "Lianshan" was created by the Emperor's family, the first generation of monarchs after Pangu founded the world.

2. Gui Zang

"Gui Zang" is one of the Three Changes. Huan Tan, a scholar of the Eastern Han Dynasty, said in "New Lun Zheng Jing": ""Lianshan" has 80,000 words. "Gui Zang" has 4,300 words (condensed version of the Qin Dynasty); "Lianshan" is hidden in Lantai, and "Gui Zang" is hidden in Taibu."

3. Zhouyi

< p>The content of "Zhouyi" includes two parts: "Jing" and "Zhuan", but it is generally considered to be a fusion work from the Qin and Han Dynasties.