Chapter 23: A Number of Caves He Yu was inside the coffin! The moment that thought struck me, I rushed forward and jammed the shovel under the coffin lid. In ancient times, coffins and their outer casings were sealed extremely tightly to prevent decay—leave a living person in there long enough, and they'd suffocate to death. The more I thought about it, the more anxious I became. I picked a spot and pushed upward with all the strength I had. The nested coffin lid, which normally would take two or…