My passive skill is simple - you get stronger when you get hit.
Literally.
Just half an hour ago, a dozen elite barbarian cavalry surrounded me in a pile of corpses. They were grinning ferociously, wanting to see how many swords a small soldier of the Yan Dynasty could withstand.
I was only wearing the worst leather armor, with three arrows stuck in my body, and I was bleeding so much that I almost lost consciousness.
The leading centurion struck my chest with a knife, and I heard the sound of bones cracking.
But he didn't know that at that moment, a voice sounded in my head:
[Suffering a heavy hit, Iron Shirt proficiency +10]
[Detected near-death state, practice efficiency x300%]
[Iron Shirt Proficiency +30]
[Congratulations, your "Iron Shirt" has reached an unprecedented level of 100!