1.升级换代
updating and upgrading (of products)
2.四十不惑
Life begins at forty.
3.谁言寸草心，报得三春晖
Such kindness of warm sun, can't be repaid by grass.
4.水涨船高
When the river rises, the boat floats high.
5.时不我待
Time and tide wait for no man.
6.杀鸡用牛刀
break a butterfly on the wheel
7.实事求是
seek truth from facts
be practical and realistic
be true to facts
8.说曹操，曹操到
Talk of the devil and he comes.
9.实话实说
speak the plain truth
call a spade a spade
tell it as it is
10.实践是检验真理的唯一标准。
Practice is the sole criterion for testing truth.
11.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.
12.韬光养晦
hide one's capacities and bide one's time
13.糖衣炮弹
sugar-coated bullets
14.天有不测风云
Anything unexpected may happen a bolt from the blue.
15.团结就是力量
Unity is strength.
16.跳进黄河洗不清
even if one jumped into the Yellow River, one can not wash oneself clean
there's nothing one can do to clear one's name
17.歪风邪气
unhealthy practices and evil phenomena
18.物以类聚，人以群分
Birds of a feather flock together.
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