来踪去迹

lái zōng qù jì

lit. the traces of a person's movements (idiom)

fig. sb's history; the ins and out of a matter

来

lái

to come

踪

zōng

variant of 蹤|踪[zong1]

去

qù

to go

迹

jì

variant of 跡|迹[ji4]