At this moment, King Qin Guang was already on full alert. If before, he hadn't taken the others seriously, it was completely different now! Heavenly Heart Mountain turned out to be a primordial-level treasure, what an incredible matter this was.
He deeply understood the power of primordial-level treasures. For one, isn't the Life and Death Register an example of such a treasure? Though the ten kings of the underworld are mighty, they alone cannot make the underworld indestructible. But it is precisely because of the Life and Death Register that the underworld has remained stable for so many years without encountering any obstacles. One could say, the Life and Death Register is the key factor.
