How many kinds of qigong are there?

To be honest, it's hard to say, I'll break it down for you from big to small: first of all, it's divided into internal and hard qigong. The internal work is divided into: Buddhism, Taoism and the two families. Buddhism contains health internal energy, technical combat (martial arts in the internal energy), Taoism is the same, only the realization of the way, the time period of practice, luck when the intention to go through the different meridians. Buddhists advocate dynamic qigong, Taoists advocate static qigong. But their effects are the same. Hard qigong, on the other hand, is a kind of qigong to gather qi in a certain place to realize resistance to fighting. The above is a generalization of qigong. But as far as the present, how to change, still not out of the above classification, just practice changes. I hope you understand