牽線

to pull strings / to manipulate (a puppet) / to control from behind the scene / to mediate

to lead along / to pull (an animal on a tether) / (bound form) to involve / to draw in

thread / string / wire / line / CL:條|条[tiao2],股[gu3],根[gen1] / (after a number) tier (unofficial ranking of a Chinese city)

sb who pulls strings to get things done / wirepuller / go-between / matchmaker