Question for those that went to the Martial Arts Extravagganza at Comic Con

[Guybrush]

What was the name of that movie where an assassin chases a guy into a field of flowing grass reeds, and ends up killing them with a blade of grass, by slicing their throats with it? I wish I knew more details. I think it was a Korean flik but i'm not sure. It was really bad but really funny.

 

[Guybrush]

oops sorry repost