Well... no. As far as I'm aware Alexei is the only one who knows that kinda knowledge.
It's difficult ta explain. But basically, in our world there's things called blastia and they're used to power everything. From the barriers protecting the towns to a small music box on a mantelpiece. When I died Alexei replaced my heart with a blastia. [He points to this chest before unbuttoning the shirt. This is the 2nd time in 2 weeks he's shown someone his heart. It never gets easier and it never gets less awkward to explain. When he's done Emil should be able to see it clearly.]
[Action]
It's difficult ta explain. But basically, in our world there's things called blastia and they're used to power everything. From the barriers protecting the towns to a small music box on a mantelpiece. When I died Alexei replaced my heart with a blastia. [He points to this chest before unbuttoning the shirt. This is the 2nd time in 2 weeks he's shown someone his heart. It never gets easier and it never gets less awkward to explain. When he's done Emil should be able to see it clearly.]
I'm a dead man walkin'.