From the 10th World Wushu Championships in Toronto (2009).

The martial art is Duilian, also known as Wushu. Based on this Wiki page, the spear she's slicing the air to shreds with is the Qiang, a flexible spear with red horsehair at the head.

Their screaming alone scares the hell out me. [via]

http://feeds.boingboing.net/~r/boingboing/iBag/~3/yJUl9Q058No/amazing-martial-arts-performan.html