徒勞無功

disciple or apprentice; follower; believer; on foot; to no avail; in vain; merely; just; only; a prison sentence

To work hard; labor; toil; fatigue; a laborer; a meritorious deed; surname Lao; used in polite expressions to trouble someone.

Not to have; no; none; not; to lack; un-; -less; used in Buddhist phrases like 'namo'.

Achievement or accomplishment; merit or good result; work or effort; success; a type of mourning attire.