入戏

(of an actor) to inhabit one's role / to become the character / (of an audience) to get involved in the drama

to enter / to go into / to join / to become a member of / to confirm or agree with / abbr. for 入聲|入声[ru4 sheng1]

variant of 戲|戏[xi4]

trick / drama / play / show / CL:齣|出[chu1],場|场[chang3],臺|台[tai2]