A bad beginning makes a bad ending. 不善始者不善终。

A bad thing never dies. 遗臭万年。

A bad workman always blames his tools. 不会撑船怪河弯。

A bird in the hand is worth than two in the bush. 一鸟在手胜过双鸟在林。

A boaster and a liar are cousins-german...