The black box contained a piece of deep purple velvet, upon which rested a black stone.
The stone looked ordinary, like a small pebble that could be picked up by the river's edge. Though it had a decent luster, it was not any kind of gem, and even when placed in such a box on velvet, it still just looked like a stone that might be mistaken for crystal at most, an uneven raw crystal stone.
However, Chen Yu clearly did not regard this stone as ordinary. He carefully took it out of the box with his hand, pinching it between his index finger and thumb to align it with the light source. Squinting his eyes, he inspected it closely, and the black stone appeared to be semi-transparent, with a golden thread seeming to move within it.
Despite being against the light, the beams didn't pass through the stone; in fact, the light around the stone vaguely felt as if it were being absorbed by it.
