1. 大事化小，小事化了。

Try first to make their mistake sound less serious and then to reduce it to nothing at all.

2. 不以物喜，不以己悲。

Not pleased by external gains, not saddened by personal losses.

3. 知己知彼,百战不殆。

Know the enemy and know yourself, and you can fight a hundred battles with no danger of defeat.

4. 欲速则不达。

Haste does not bring success.

5. 一言既出，驷马难追。

A real man never goes back on his words.

6. 一方有难,八方支援。

When disaster struck, help came from all sides.

7. 屋漏又逢连阴雨。

Misfortunes never come singly.

When it rains it pours.

8. 天有不测风云。

Anything unexpected may happen.

A bolt from the blue;out of the blue.

9. 三天打鱼，两天晒网。

work by fits and starts

10.人逢喜事精神爽。

Joy puts heart into a man.

11.金无足赤，人无完人。

Gold can't be pure and man can't be perfect.

12.虎父无犬子。

A wise goose never lays a tame egg.

13.好事不出门，恶事传千里。

Good news never goes beyond the gate, while bad news spread far and wide.

14.功夫不负有心人。

Everything comes to him who waits.

15.比上不足，比下有余。

Worse off than some, better off than many; to fall short of the best, but be better than the worst.