15. **Learn from the excellent principles of others, and immediately put them into practice, getting feedback.**
16. **Don't talk nonsense about things you don't understand; be honest about your ignorance and strive to learn.**
17. **Analyze independent events independently; don't casually attribute cause and effect.**
18. **Think deeply, organize your internal logic, and write it down clearly; be diligent in writing.**
19. **Do not limit yourself; the greatest prison is the one inside your own mind.**
20. **Do not negate others; everyone has their own value.**