Anyone know how to do dynamic tension?

[Tigerwarrior]

I want to start doing dynamic tension workouts. Only problem I don't know how to do them. I'm not really talking atlas style stuff, more of kung fu style stuff. I hear this is the best way to improve the power and speed of your techniques. I learned one exercise online, but honestly not many people are talking about this form of training anymore. I saw Harry wong had a pt2 video on YouTube, but I think I need pt1 before I watch that one. I didn't really see much instruction on the techniques he showed just demonstrations. I also know he has a book. Anyone here do these types of exercises? I've looked for part 1 of his videos but good luck finding one, and if you do expect to pay tons. I might just get the book.