The air inside the RV is warm, and with the presence of an oxygen generator, there's no need to wear the oxygen tubes inserted into the nose, making breathing quite comfortable.
Liu Li is wearing a watch that can monitor blood oxygen levels, and the reading is 97. Even at lower altitudes, this is a very healthy blood oxygen level.
During a break, Li Younan leans back on the sofa for a nap.
After a while, he feels someone moving his hand. When he opens his eyes, he sees Liu Li putting the blood oxygen monitoring watch on his wrist.
He chuckles silently, then hears Liu Li curiously say, "Your blood oxygen is always 98."
Li Younan certainly wouldn't tell Liu Li that even without this oxygen generator, his blood oxygen wouldn't drop even if he were at a dance party on the plateau.
The physical ability granted to him by the system is truly fascinating.
