Hard qigong is the best to practice and the most painful ... but it is the easiest to feel materially. You can try it at first. Internal strength and health qigong are relatively boring, generally assisting various martial arts. Dandao, a double-cultivation life, won't be possessed at first, but it's hard to say later. I suggest you try hard, which is faster … The first floor is persistent, and if you do it right, it will be much faster if you understand it …