This puzzled the heck out of me when I saw this but I eventually figured out that this must be the result of a level 9 death blessing.
Only now he's "never heals". Any way to fix that?Any way to fix that? Oh well, at least I can keep him in my capital to cast some rituals I'm otherwise missing.
I wish I'd gotten Lu Tung-Pin as well but I guess a non-sacred unit must have killed him.