鸡蛋碰石头

鸡蛋碰石头

Literally means:

like an egg striking a rock

Actually means:

attempt the impossible

If an egg hits on a rock, it is the egg that will break.

It figuratively means that the weaker, despite the huge gap between their respective strengths, adamantly fight against the much stronger rival with a failure already sealed. It is often used to warn people not to compete with some one that is far stronger than themselves; otherwise they will have tough time. It is derogative in meaning.

鸡蛋跟石头相碰，碰破的只能是鸡蛋。

比喻弱小的一方不顾自己力量很小，硬跟力量很强大的一方争斗，结果是自己倒霉。通常用来劝说人们，如果自己的实力很小，就不要去跟实力比自己大很多的人争斗，否则是会吃苦头的。具有贬义色彩。