線人費 (sin3 jan4 fai3) — information money (given by police to informants for secret information) in Cantonese
sin˗₃線janˎ₄人fai˗₃費简 线人费
Mandarin Pinyin: xian4 ren2 fei4
Meaning of 線人費
nouninformation money (given by police to informants for secret information)