to go out; to come out, to arise; to occur, to produce; to yield, to go beyond; to exceed, (used after a verb to indicate an outward direction or a positive result), classifier for dramas, plays, operas etc
to enter; to go into, to join; to become a member of, (bound form) to conform to (as in 入時|入时[ru4 shi2]), abbr. for 入聲|入声[ru4 sheng1], (on product packaging, after {number n} + {classifier}) containing (n pieces) (from Japanese 入 "iri")