Emperor Tianjue stared at the expanse of Annihilation Sea before him, his expression grim and his teeth clenched.
He knew that Wan Ke must have carried high-grade Annihilation Sea beast crystal cores on him. Only then could he unleash such astonishing speed upon the Annihilation Sea and depart.
Or perhaps the other party possessed some method of shifting through space atop the Annihilation Sea!
One had to know that the Annihilation Sea contained a peculiar power, one that both the Heavenly Court and the Ancient Immortal Realm had studied for a long time without figuring out.
To suppress the influence of the Annihilation Sea's peculiar power, one could only kill Annihilation Sea beasts, seize the crystal cores within them, and use the cores' power to suppress that peculiar force.
The solitary boat Mu Qing had previously seized from a Heavenly Court expert, for instance, had been forged from ten Black Iron Grade crystal cores.
Of course, one could also simply hold a crystal core in hand, channel power into it, and fly.
The number and grade of crystal cores determined how effectively they could suppress the power of the Annihilation Sea.
A single Black Iron Grade crystal core could allow someone to fly slowly over the Annihilation Sea, while a single King-Level crystal core could let someone directly use spatial power atop the sea to shift through space.
The gap between them was truly enormous!
Yet even the Heavenly Court did not possess King-Level crystal cores. According to the grading system established by the Heavenly Court...
The crystal cores of Divine Emperor Realm sea beasts were Black Iron Grade.
The crystal cores of Lower Great Emperor sea beasts were silver grade.
The crystal cores of Upper Great Emperor sea beasts were Gold Grade.
As for King-Level crystal cores, only Annihilation