關係戶

a connection (sb with whom one has dealings on the basis of "scratch my back and I'll scratch yours")

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

relation / relationship / to concern / to affect / to have to do with / guanxi / CL:個|个[ge4]

to connect / to relate to / to tie up / to bind / to be (literary)

a household / door / family