lián​huán

chain

连环 (連環) lián​huán
chain noun
chain; a series of interlocking rings

This kind of puzzle ring is very hard to undo.

serial verb
describing a series of events, especially crimes, occurring in sequence

Frequency

Movie subtitles
17.4 per million appears in 5% of films
Written text
5.26 per million

Sources

Definitions
CC-CEDICTAI-generated definitions