Idea Two

Inside the cave safehouse.

The morning sunlight faintly seeped in through the observation window's baffle.

Yu Hong leaned against the fireplace wall, slowly waking up from a hazy dream.

His brows furrowed as he tilted his neck, feeling a bit numb on his back and stiffness in his cervical spine, likely from being pressed against something.

Opening his eyes, he immediately looked at Doctor Xu, who lay in the sleeping bag.

The guy was sleeping soundly, his complexion much better than the day before.

"Doctor Xu? Doctor Xu?" he called out a few times.

Doctor Xu slowly moved his eyelids, twitched his leg, then suddenly opened his eyes, showing a look of alertness.

"Am I still alive?"

"Seems like it," Yu Hong replied, "Yesterday I thought you were paralyzed, but thankfully, you recovered after lying down for a night."

Doctor Xu propped himself up, his cracked lips moving slightly.

"Old problem... vigorous exercise tends to trigger it, just a bit worse than usual yesterday."