1.谁言寸草心报得三春晖

Such kindness of warm sun， can’t be repaid by grass.

2.水涨船高

When the river rises， the boat floats high.

3.时不我待

Time and tide wait for no man.

4.杀鸡用牛刀

Break a butter fly on the wheel.

5.实事求是

Seek truth from facts；

Be practical and realistic；

Be true to facts.

6.说曹操，曹操到

Talk of the devil and he comes.

7.实话实说

Speak the plain truth；

Call a spade a spade；

Tell it as it is.

8.实践是检验真理的唯一标准

Practiceis the sole criterion for testing truth.

9.山不在高，有仙则名

No matter how high the mountain is， its name will spread far and wide if there is a fairy；

10.韬光养晦

Hide one’s capacities and bide one’s time.

11.糖衣炮弹

Sugar-coated bullets.

12.天有不测风云

Any thing unexpected may happen.

A bolt from the blue.