团结就是力量Unity is strength.

跳进黄河洗不清eve if one jumped into the Yellow River, one can not wash oneself clean--there's nothing one can do to clear one's name

歪风邪气unhealthy practices and evil phenomena

物以类聚，人以群分Birds of a feather flock together.

往事如风The past has vanished (from memory) like wind.; What in past, is past.

望子成龙hold high hopes for one's child

屋漏又逢连阴雨Misfortunes never come singly. When it rains it pours.

文韬武略military expertise; military strategy

唯利是图draw water to one's mill

无源之水,无本之木water without a source, and a tree wiithout roots

无中生有make/create something out of nothing

无风不起浪There are no waves without wind. There's no smoke without fire.

徇私枉法bend the law for the benefit of relatives or friends

新官上任三把火a new broom sweeps clean

虚心使人进步,骄傲使人落后Modesty helps one go forward, whereas conceit makes one lag behind.

蓄势而发accumulate strength for a take-off

心想事成May all your wish come true

心照不宣have a tacit understanding; give tacit consent; tacit understanding

先入为主First impressions are firmly entrenched.

先下手为强catch the ball before the bound

像热锅上的蚂蚁like an ant on a hot pan

现身说法warn people by taking oneself as an example

息事宁人pour oil on troubled waters

喜忧参半mingled hope and fear

循序渐进step by step

一路平安，一路顺风speed somebody on their way; speed the parting guest