It's a movie about two sisters, one of them is professional killer. At the start of the movie the killer one meets with a man and his guards and she kill the guards with guns and the main guy protects himself and she killed him with gas (I remember he was in a place that bullets can't affect him so she put her glasses and then the glasses start to make gas which suffocates him).
It's kind of an old movie, the sisters are Japanese or Chinese, I am not sure, but they are from the East, I am sure it's not after 2006 and perhaps in the 90's. I will be thankful if anyone recognizes this. Sorry for bad English guys.