This was The Assassin (which won the Best Director Award at Cannes). It was not all that bad. Yinniang (Shu Qi) was the Angel of Death -- moving effortlessly as the wind, tall and grim. Quiet as air too -- I read that she had just 10 lines in the entire movie. She was trained from young (by a nun) to kill -- equiped with the best of skills for this function. But Yinniang has a soft heart and did not complete what she was tasked to do.
What's the takeaway for me in this movie? That you may possess the best skills in the world, but they aren't of any use if they don't result in anything meaningful (for you). At the end of the movie, Yinniang managed to find good use for her martial arts -- more for preventing deaths than to kill.
One of the best scenes in the movie was in black and white -- when death was seen through the eyes of a dying man as he was shot by an arrow and fell from his horse -- the sky through a tangled mess of twigs, leaves and branches -- and the great rustling of leaves as the wind blows through them. At the moment of death, the senses are sharpened. And then, darkness. (Okay, this is just my interpretation and may not be the director's intent.)
Here's the written story (which is still very complicated to me) http://www.theworldofchinese.com/2013/09/tales-of-the-marvelous-part-3-nie-yinniang/