As an ultra-high-density material, the price of Black Nether Heavy Gold itself is not considered expensive. Zhang Yu spent over a hundred thousand Immortal Coins to pile it into a small hill.
At this moment, coordinated by the Kunlun Eye, Zhang Yu's cultivation technique operated, condensing the entire weight of the Black Nether Heavy Gold hill into his palm.
Zhang Yu could feel that if he were to unleash this power, it would be like hurling an entire mountain range, enough to trigger a super earthquake.
"In this way, I no longer need to borrow power from the outside; I can instantly unleash great power by communicating with the Immortal Cave Heaven."
Zhang Yu knew that whether it's production lines or laboratories, these developments are just the beginning.
Up to now, he has spent no more than a few million Immortal Coins.
