You can't always tell what style of Kung-Fu it is by just watching it..... Unless they say, or you know what style the person doing it is, it is a guess at best. Many styles of Kung-Fu look alike. but there are known to be at least 300-400 different styles. And there may be more. 300-400 was the estimate published in Black Belt Magazine back in the 1960's or 1970's. There is just no way to tell by only seeing it practiced.
According to what i have been able to find, he is supposedly doing Shaolin Kung-Fu. but Shaolin Kung-Fu is not one set style, it can be several different things. Looking at the video, I don;t see anything that looks Chinese at all. It looks, like Taekwondo and gobbledygook, hotdog, XMA crap. His best advantage is that he is fast, flexible, and tall. If he was 5'10 or shorter, he would not be scoring many of those kicks at all. I'm sure he worked hard to be able to do those things, but as far as I'm concerned, it is not authentic Kung-Fu...
just my opinion.
Martial arts training and research over 43 years (Since 1967).
Teaching martial arts over 37 years (Since 1973).