走内线

insider contacts / via private channels / to seek influence with sb via family members (possibly dishonest or underhand)

to walk / to go / to run / to move (of vehicle) / to visit / to leave / to go away / to die (euph.) / from / through / away (in compound verbs, such as 撤走[che4 zou3]) / to change (shape, form, meaning)

inside / inner / internal / within / interior

variant of 線|线[xian4]

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