noun
fa jin; explosive release of internal power
A martial arts term, especially in Chinese internal styles like tai chi, referring to a sudden, explosive emission of force from a relaxed state.
太極拳の達人は発勁で相手を遠くに飛ばす。
A tai chi master sends an opponent flying far away with fa jin.
発勁の練習には長年の鍛錬が必要だ。
Practicing fa jin requires years of training.