In an instant, something seemed to click for Li Xian. He reached out and rubbed the wall a couple of times.
Good. It wasn't too smooth.
After confirming this, Li Xian took a deep breath, braced his back against one wall, then stretched out his legs-and planted his feet against the opposite wall.
Once he was suspended above the floor, Li Xian reached back to brace his hands against the wall behind him and began inching upward.
Rather than rush all the way to the top, Li Xian practiced a few times close to the ground. Once he was sure he had the technique down, he sat and rested for a while. When he had recovered most of his strength, he began climbing in earnest.
With no light in the confinement room, Li Xian had no idea how high he had climbed. He could only estimate his progress by feel.
Gradually, Li Xian felt he had reached a height beyond what he could touch while standing on the floor.
He carefully freed one hand and felt around the wall beside him, then switched to the other. Finding nothing, he inched higher and felt around again with each hand in turn.
After repeating this roughly three times, Li Xian reached up and touched the ceiling.
Li Xian let out a long breath, wiped the sweat off his palms, and felt around more quickly.
He could feel his legs beginning to tremble.
Finally, his right hand touched something uneven.
There really was an air vent here!
Li Xian immediately took the [Sharp Utility Knife] out of his inventory. Without extending the blade, he wedged the knife itself into a gap in the vent.
His position made it extremely difficult to exert any force, so Li Xian could only do his best to