Training internal opens channels for Qi

A student asks: "Is the Qi generated from Yin or from Yang"? Maybe this is putting the "cart before the horse" before one has a chance to learn "internal discipline" of movement and establish what is called "energy channels" in the body first as you see in the video above.  Above all one has to adopt the attitude of training to achieve this and then Qi flow will come naturally. After all, as Master Stephen Hwa says: "Learning Internal Discipline leads to Qi improvement without specifically training Qi" 

I also recommend you view the entire video if you have the chance:  Qi and Internal Energy in Classical Tai Chi Master Stephen Hwa:  "At the beginning of the learning process, you are instructed to relax or forget about the shoulder and the arm, just concentrate on the abdomen and the back for the internal movements. This is to eliminate the common habit of moving from the arm or shoulder. The shoulder and arm just follow the movements from the internal core. (My student Ernie said that trying to relax the shoulder did not work for him, because of the act of “trying to relax” placed too much attention on the shoulder which kept the shoulder in play.) For most people, the difficulty here is to find the neural pathways in the core which can make the internal move you intended.  After you practice the form in this way for a while you will develop some knack for moving from the core. Now comes the second stage of learning that is to integrate your arm with the internal movements and to expanding the circulating internal energy and qi from the torso to the arm, the palm and the fingertips.  

I previously talked about the incorporation of “yi”, or martial art intent, in the movement. With practice, one will achieve the state where the arm and the internal core move as “One” and, that the internal energy and qi flow with the “yi” of the movements to the palm and the fingertips. By examining my own movements I found that, in this state, my arm constantly exerts a slight stretch or pull on the shoulder. This stretch firmly engages the arm to the shoulder. Since the elbow is always lower than the shoulder, there is a downward stretching force on the shoulder causing the shoulder to sink which in turn connects it to the core enabling the arm and the core moving as “One”. The stretching force involved here is quite subtle and small, just sufficient to achieve the engagement. Those of you who have already achieved such engagement in your practice probably feel this already. "