The crystal measured roughly the size of an adult's forearm. Its surface carried a deep crimson color bordering upon black. But within the transparent crystal, something moved. Tiny strands resembling crimson flesh slowly writhed through its interior.
They twisted, expanded, contracted and pulsed, almost as though the crystal possessed a heartbeat of its own. The strange sight immediately attracted Lin Mu's complete attention and he instinctively released his Immortal Sense.
But the moment his senses touched the crystal, his pupils contracted.
'What?' An astonishing surge of vitality flooded his perception.
It was incredibly pure and dense, feeling almost boundless to Lin Mu as it poured from the crystal like an endless spring.
'So dense...' Lin Mu couldn't hide his surprise.
He had encountered countless heavenly treasures. Even so, the vitality packed inside this single crystal exceeded almost every natural treasure he had ever seen. The quality alone stunned him.
