牵红线

牵红线	qiān hóng xiàn	to play matchmaker
牵	qiān	to lead along / to pull (an animal on a tether) / (bound form) to involve / to draw in
红	Hóng	surname Hong
红	gōng	used in 女红
红	hóng	red / popular / revolutionary / bonus
红线	hóng xiàn	red line
线	xiàn	variant of 线
线	xiàn	thread / string / wire / line / CL:条,股,根 / (after a number) tier (unofficial ranking of a Chinese city)