Heart-wrenching but must-read notes on sobering human nature:

If you have been hurt, deceived or oppressed because of kindness, and often feel helpless, then you must read this.

Although the content will make you feel painful, it will also become a tonic for your complete sobriety.

1. Don't be easily used by others: the more people demand from you, the less grateful they are to you.

2. The good and evil of human nature change with interests: don't overestimate your relationship with anyone. The people who can really hurt you are often those who are closest to you.

3. Extreme kindness is not a safe road: at the end of foolish kindness, only the south wall, coffin and Yellow River are waiting for you.

4. There are only two kinds of people in the world: one is the food at the mercy of others, and the other is the people who enjoy the food. There is no third kind.

5. Honest people are often used: don't give blindly, because you can't guarantee that you won't be bitten back.

6. People's hearts are warm because there is no interest exchange: don't gamble on human nature with the depth of feelings, the gain is not worth the loss.

7. Human feelings can easily turn into hatred: Don't expect people to be grateful to you. Behind every contribution there are needs and expectations.

8. Keep the bottom line: Don't use tolerance to exchange for transparency, and dare to say no to those who are pushing the issue.

9. The ability to turn the table: The key to peaceful coexistence is not tolerance, but the ability to turn the table.

10. The sharpest sword is gentleness: gentleness is more lethal than cold war, toughness, and determination.