来去无踪 lái qù wú zōng

DEFINITIONS

  1. come without a shadow, leave without a footprint (idiom); to come and leave without a trace

CHARACTERS

来 lái come, coming; return, returning
去 qù go away, leave, depart
无 wú negative, no, not; KangXi radical 71
踪 zōng footprints, traces, tracks