窍门 (竅門) qiàomén

qiàomén noun a trick; an ingenious method; know-how; knack
Domain: Modern Chinese 现代汉语
Notes: (CC-CEDICT '竅門')

Contained in

• 窍门儿(竅門兒) a trick; an ingenious method; know-how; the knack (of doing something)