expression, godan verb (-su)
to throw the baby out with the bath water; to strain at a gnat and swallow a camel; to obsess over insignificant details and miss the larger point
Proverb criticizing excessive attention to minor flaws that ruins the whole. Literally 'to straighten the horns and kill the cow'.
Trying to fix a small mistake and ruining the whole thing is like straightening the horns and killing the cow.