Qi blockage. . . you think that the energy is not reaching the youngquan and laogong cavities. Once again I do not believe this is the case. . . My four gates breathing is strong and has grown stronger with practice. I can easily put a flame out from a distance of two feet with minimal intention and the flick of my wrist. Not that the distance is great but I used to struggle with 5 inches. Anyway if the energy was not reaching my extremities and beyond the candle would not go out.