功高不賞

high merit that one can never repay (idiom); invaluable achievements

meritorious deed or service / achievement / result / service / accomplishment / work (physics)

surname Gao

high / tall / above average / loud / your (honorific)

no; not so / (bound form) not; un-

to bestow (a reward) / to give (to an inferior) / to hand down / a reward (bestowed by a superior) / to appreciate (beauty)