One of my personal interests is that when most people think that high altitude hypoxia will be fatal, Liu's experience is opposite to that. My personal understanding is that the high-speed impact air greatly enhances the air density of the cockpit, of course, including the increase of oxygen. This is a particularly interesting discovery to me. I will work with my colleagues, aeronautical medics and flight control experts to study these interesting topics with accident data collected. We expect that we will find something, and then prove something, for our safer air travel.
I had just been wondering if the ram air entering the cockpit had increased the cabin pressure enabling the pilot to continue without supplemental oxygen for longer.