Duan Yongping's List of Things Not to Do
1. Do not short sell. — Avoid the mistake of going to zero.
2. Do not borrow money. — Avoid the mistake of going to zero.
3. Do not invest in things you do not understand. — Invest within your circle of competence.
4. Do not take shortcuts. — Shortcuts are often the hardest and longest paths.
5. Do not blindly expand your circle of competence. — The most common mistake investors make.
6. Do not make decisions frequently. — The more decisions made, the more chances of making mistakes.
7. Do not engage in short-term speculation. — If short-term trading could make big money, Buffett wouldn't exist.
8. Be reluctant to invest heavily in companies with (interest) debt. — Move forward lightly.