No mercy.

Refers to a person who shows no mercy to others.

The origin of the idiom: Qing Wu Ren Jian's "The Present Situation of Wonders Witnessed in Twenty Years" 96: "What annoys me is that this dog official doesn't know who instigated it and is ruthless."

Example of idiom: He

Unscrupulous antonym: if there is room, if there is room. Zhou Enlai's On the United Front 1: "On the one hand, we oppose this reactionary and passive anti-Japanese line, on the other hand, we still have some surplus.

Idiom grammar: as predicate, attribute and adverbial; Refers to people who have no feelings.