"How are you?" Ling Chen quickly rushed to the middle-aged man, removed the blanket, then took off his own oxygen mask and placed it on the man's face. After taking a few deep breaths, the middle-aged man's condition gradually improved, and his consciousness became much clearer.
Looking at the middle-aged man's attire, Ling Chen asked, "Are you the building's cleaning staff?"
The man nodded, continuously inhaling the oxygen. Once the middle-aged man's condition stabilized, Ling Chen stood up, glanced at the situation in the room, and said, "We can't stay here long, we must leave immediately." Saying this, Ling Chen took an oxygen tank off his back and helped the middle-aged man carry it on his back.
"Brother, the oxygen inside isn't much, it's hard to say if we'll make it out. You'd better reduce oxygen consumption. Once it's all used up, we're really done for, understand?"
The middle-aged man weakly replied, "I understand."
