lit. (bamboo) splits when it meets the knife's edge (idiom); fig. easily solved

edge of blade

sharp blade

(bladed) weapons

cutting tool

curved blade

double-edged blade

to edge a knife, scissor, sword etc

to kill with one's own hand

naked sword

bloodshed

double-edged sword

double-edged sword (lit. and fig.)

hand-to-hand fighting

lit. no blood on the men's swords (idiom); fig. an effortless victory

handling a butcher's cleaver with ease (idiom); to do sth skillfully and easily