钻牛角尖 | Chinese meaning

钻牛角尖【zuān niú jiǎo jiān】

lit. to penetrate into a bull's horn (idiom); fig. to waste time on an insoluble or insignificant problem
to bash one's head against a brick wall
a wild goose chase
a blind alley
to split hairs

lit. to penetrate into a bull's horn (idiom); fig. to waste time on an insoluble or insignificant problem
to bash one's head against a brick wall
a wild goose chase
a blind alley
to split hairs