補偏救弊

to remedy defects and correct errors (idiom); to rectify past mistakes

variant of 救[jiu4]

to save / to assist / to rescue

to lean / to slant / oblique / prejudiced / to deviate from average / to stray from the intended line / stubbornly / contrary to expectations

detriment / fraud / harm / defeat

to repair / to patch / to mend / to make up for / to fill (a vacancy) / to supplement