Hi Tutor.
The Yang come from the sky and run in the body by the meridians from the upper to the down. The Yin qi come from the earth and run in the body from down to upper. So can I say the Yang go down and Yin go up?
But the Yang qi go up to nourish the brain. And the yin qi is weighter and go down.
How is the fisiologic direction of the yang and yin inside of the body?
Wilson