If someone asks Zheng Qing about his feelings at ten thousand meters altitude.
Zheng Qing would answer, swollen and cold.
The swelling is due to the extremely low air pressure at high altitude, whereas the pressure inside the human body is very high, resulting in a feeling of being blow-up.
Zheng Qing has no experience of being pregnant, but at this moment, with the violent swelling in his abdomen, he feels like he's about to give birth. And his ears, throbbing with pain, as if something is about to burst through his eardrums in the next second.
As for the cold, it's because high altitude receives less surface radiation heat, a bit of geography knowledge Zheng Qing knew since middle school.
