The boundary of life and death.
The boundary of being and disappearing.
These are two rather vague topics.
In mystical studies, there's a definition—'I think therefore I am', meaning as long as one can think, one is alive, one exists!
The current state of Su Lu resides in the ambiguous state of 'Schrodinger's cat'.
It appears as though he's already dead, completely disappeared, yet he can still think.
After an indeterminable amount of time in the vast darkness and chaos, his thoughts gradually came to life: "I!"
"I!"
"I am here!"
Fearful of losing his thoughts due to chaos and becoming truly dead, Su Lu kept reminding himself.
Finally, a flash of lightning crossed, and he realized his situation: "I am... ascending!"
Inside the cave.
The place where Su Lu had originally disappeared.
A light wind floated, stirring up dust, swirling around.
The spiritual energy surged, becoming more intense.