事不关己，高高挂起

to feel unconcerned and let matters rest (idiom)

matter / thing / item / work / affair / CL:件[jian4],樁|桩[zhuang1],回[hui2]

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

mountain pass / to close; to shut; to turn off / to confine; to lock (sb) up; to shut (sb in a room, a bird in a cage etc) / to concern; to involve

a matter of no concern to oneself (idiom)

self / oneself / sixth of the ten Heavenly Stems 十天干[shi2 tian1 gan1] / sixth in order / letter "F" or Roman "VI" in list "A, B, C", or "I, II, III" etc / hexa

surname Gao

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

to hang or suspend (from a hook etc) / to hang up (the phone) / (of a line) to be dead / to be worried or concerned / to make a phone call (dialect) / to register or record / classifier for sets or clusters of objects / (slang) to kill / to die / to be finished / to fail (an exam)

to hang up (a picture etc) / to hoist up (a flag) / (computing) to suspend (a process) / (of a system) to hang / pending (operation)

to rise / to raise / to get up / to set out / to start / to appear / to launch / to initiate (action) / to draft / to establish / to get (from a depot or counter) / verb suffix, to start / starting from (a time, place, price etc) / classifier for occurrences or unpredictable events: case, instance / classifier for groups: batch, group