hùn​jìn

infiltrate

混进 (混進) hùn​jìn
infiltrate verb
to enter a place, organization, or group secretly or by using a false identity

He put on a suit and managed to sneak backstage by pretending to be a staff member.

Frequency

Movie subtitles
4.44 per million appears in 2% of films
Written text
1.68 per million

Sources

Definitions
CC-CEDICT