"The correct question is, why do we feel our Physical Value depleting faster."
Li Cheng calmly said, pointing with his mechanical arm at his bottled lung, "I used to think that the fatigue of the body came from the consumption of high-pressure gas in the bottle.
But after dissection, the bottle's function is to, and only to, power the brain. It has nothing to do with the limbs.
We feel fatigued because of the pressure differential—when there is a pressure difference between two areas, the high-pressure area will exert pressure on the neighboring low-pressure area. This pressure will push the fluid from the high-pressure area to the low-pressure area until the air pressure in both areas reaches equilibrium.
The golden leaves in the brain are so delicate that they cannot withstand too strong an airflow. Therefore, the high-pressure gas in the bottle is transported to the brain through a dual pressure reduction via the trachea and capillaries.
