FaJing, or "issuing energy" is a high level ability in Internal Martial Art, and has to do with "sending" people. It is not technically a "push" nor is it a "strike" it is an understanding of the balance and center of your opponent coupled with the ability to use structure to send a "jolt" of Qi energy through your body and send them. It is an extremely subtle skill, and very difficult to master, and many who claim it can not adequately demonstrate it. But this guy shows it very well, as well as other internal skills- trapping, slipping, qina (locking) redirecting etc. When you look at the first section (0:00-1:20) which shows techniques and applications, and think of them using the explosive power of fajing, it is an excellent example of internal power. The actual FaJing section starts around 1:20. @Shaun Beastman Anderson I am tagging you cause I want you to check this out.