Inside, they found an underground hall lined with bronze seals and a half-buried altar. There was also a rare divine beast there, though it did not look like what most people would expect from something so powerful. It was a black-feathered sky stag with antlers like carved jade branches, its body lean and elegant, with silver lines of light moving under its skin like water. It had been wounded by an ancient trap formation that still lingered in the hall, and it had been using the sword array's remaining energy to keep itself alive. The moment it saw them, it lowered its head and stamped once, which shook dust off the ceiling. Mo Yuxin immediately knew it was not attacking out of hostility. It was warning them away.
