Do I need to practice qi for armed forces hard qigong?

To answer the first question. First practice qi and then striking. There are also striking while practicing qi at the same time, for example, Shaolin qigong mostly belongs to this kind, there are also practicing qi first and then practicing striking external objects, for example, Emei qigong.

The second question is really the first one. There are many kinds of hard qigong, and what you said about the hard qigong practiced by the armed police is a very general statement, and what they practice is not a uniform kind of gong method. As for which kind of gong method is good, you need to choose according to your own system, and it is good if it suits you.

The third question. Practicing that kind of qigong certainly has benefits, first, to strengthen one's body, to enhance one's system and to increase one's ability to fight diseases. Secondly, defense and fitness. The third can also be entertainment. For example, the edge of what steel gun stabbed throat, single palm open brick and other programs.

You did not ask the fourth, but I also send you a sentence, if you want to practice hard qigong, must find a master guide, lest the gas go deviation (the so-called fire into the devil) caused by adverse consequences.