硬碰硬

硬碰硬:

Literally means:

let diamond cut diamond, confront the tough with toughness

Actually means:

It means dealing with a strong and powerful thing with a similarly strong and powerful thing, or confronting a tough rival seriously in an uncompromising manner.

It means handling an affair strictly according to the rules and regulations, allowing no leeway. Commendatory.

比喻用强大的实力对付强大的实力，用真正的本事或强硬的态度跟厉害的对手较量。

比喻严格按照规定处理，不可能有任何的变通或伸缩的余地。具有褒义色彩。