Reign of Assassins

Chinese wuxia flick starring Michelle Yeoh (Crouching Tiger, Hidden Dragon) and co-directed by John Woo (Face/Off).

Set in ancient China, Zeng Jing is a skilled assassin who finds herself in possession of a mystical Buddhist monk's remains which holds an ancient power-wielding secret. She begins a quest to return them to their  rightful resting place, and so putting herself in mortal danger: a team of assassins are in a deadly pursuit to possess the remains.