引狼入室

to show the wolf into the house (idiom) / to introduce a potential source of trouble

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]

surname Shi

room / work unit / grave / scabbard / family or clan / one of the 28 constellations of Chinese astronomy

wolf / CL:匹[pi3],隻|只[zhi1],條|条[tiao2]

to draw (e.g. a bow) / to pull / to stretch sth / to extend / to lengthen / to involve or implicate in / to attract / to lead / to guide / to leave / to provide evidence or justification for / old unit of distance equal to 10 丈[zhang4], one-thirtieth of a km or 33.33 meters