1. You can't carve a rotten wood. Explanation: Rotten wood cannot be carved. Metaphor is that people cannot be made or things and situations are ruined and hopeless. Also known as "it's hard to carve a rotten wood", also known as "it's hard to carve a rotten wood",

2. Zi teaches four things: honesty and faithfulness.

explanation: Confucius educated his disciples from four aspects: first, literature, that is, well-known studies. Study how to improve popularity, learn, standardize people's behavior, and make people's words and deeds have rules to follow. Third, loyalty is self-cultivation. It is to cultivate people to do what they should do voluntarily. 4. Belief in learning is the knowledge of knowing people and distinguishing things, and it is the knowledge of cultivating people's judgment.

3. an upright man is open and poised while a petty man is anxious and worried. Explanation: A gentleman is broad-minded and tolerant of others; Little people love to haggle over every ounce and are narrow-minded.

4, sensitive and studious, not ashamed to ask questions, so it is called "Wen". Explanation: it means that it is not shameful to ask people with lower status and knowledge. So you can use the word "Wen" as his posthumous title.