It makes sense in the context of just DG as sweet moderation of wind, but in the context of the formula DGSNT, it does become more of a mental stretch. I think about it in the same way that I think about the combination of DGSNT+TXS, that DGSNT warms the blood. If the blood is warm, it means yang is in the blood, and not floating out of the blood. Hollow pulses show yang floating out, so if you warm the blood, it means yang is no longer floating, but it is rooted inside yin… and that just goes to show that the more complexly one thinks about some things, the more likely one is to be wrong about them :-).