I Became an Undying Demon God After Being Sacrificed

When I was ten, my biological parents sacrificed me. When I opened my eyes again, I found myself in a tomb, having become the ghost husband of a little girl.

So here's the question: how do I dig through the bluestone bricks sealing the tomb and save myself? Anyone online? It's urgent.

Oh, right, I'm a prince. Yeah, a sacrificed prince.

[This is the Continent of the Gods, where martial arts and magical technology, developed to its peak, coexist.]