Well, considering that there is no real one definitive style from China (unlike Karate from Japan, Muay Thai from Thailand, TKD from Korea), they all just get lumped into Kung Fu, which essentially means "Chinese martial arts," do you agree? But I agree, when I tell people that I study Wushu, they say what's that? I say, Kung fu! Didn't the phrase "Kung Fu" just get popularized because of the TV series? I wouldn't be surprised if that was the origins of its popularity; there's also that nintendo game that is so addicting. I think Wushu is actually a broader way of describing martial arts in China; it covers everything from hand to hand combat to weapons fighting by soldiers. But yes, I interpreted Kung Flu as any type of human against human fighting. (some movies, of course, include the supernatural, so them as well).