Minus the Kung Fu element, this seems like something specifically reserved for Russia. Regardless, it's great to see China join in on the "look how much ridiculous sh*t happens in my country" viral Olympics. Knowing their obscene training regimens, I'm sure we'll be seeing more of these shortly. 

The description, from the video itself. Note that this occured earlier in the summer, went viral out in the Far East, and is now making its way over to us Western World Mongrels. 

According to ChinaSmack, a man wielding a large, machete-like knife rushed the campus of China's Guizhou Normal University on July 2, allegedly headed toward the cafeteria. Several security guards tried to stop him, but were cut down in the process. The man, described by police as mentally ill, stabbed and killed two guards with a 27-inch steel blade and seriously injured a third.

In footage captured by a bystander's camera phone, the suspect can be seen attacking and stabbing a guard. As he turns away from his victim, a man dashes onto the scene and delivers a powerful flying kick to the suspect's back, knocking him over.