Everyone has a thorn hidden in their heart, which is itching and hurting.
Ye Ran thought he was escaping from his current situation, escaping into war and strife, using humanitarian aid in exchange for his own salvation and a peaceful mind.
But he keeps escaping, keeps being coveted, and keeps being hunted...
The thorn that cannot be pulled out is just because he has already grown into trees and forests in his heart, affecting his entire nerves.