qiào​mén HSK7

knack

窍门 (竅門) qiào​mén
knack noun
an ingenious method, know-how, or a special trick for doing something efficiently

Once you get the knack of it, this job is actually quite simple.

Frequency

Movie subtitles
2.03 per million appears in 1% of films
Written text
2.35 per million

Details

HSK 2.0
Level 6
HSK 3.0
Level 7

Sources

Definitions
CC-CEDICT