Deep within the Ancient Thunder Palace, above the Thunder River.
The instant Clone Mo Yu opened his eyes, two dazzling rays of spiritual light seemed to shoot out.
The spiritual light shot straight into the vast Thunder River.
In an instant, surging spiritual energy raged through the Thunder River like a tide, causing the entire river to tremble violently, as if it had encountered an earthquake beneath the sea.
This disturbance lasted for a long while before finally subsiding. The spiritual light in Clone Mo Yu's eyes also faded, returning to calm, though those pitch-black eyes now appeared even deeper.
"Hehe, congratulations. After ten years of effort, you've finally broken through to Heavenly Sovereign."
As Clone Mo Yu's aura slowly settled, a slight laugh rang out. Mo Yu's original body appeared at some point and landed beside the Clone.
"Immortal Grade Heavenly Sovereign. Original body, your progress is still as astonishingly fast as ever." The Clone turned to look at the handsome original body. After sensing his aura, he gave a slight smile.
"The fact that I was able to support my breakthrough to Heavenly Sovereign means that Thunder Prison has made considerable progress in your hands over the years." The Clone stretched his muscles, producing a series of crisp cracks, and chuckled.
Breaking through to Heavenly Sovereign was an extremely difficult feat for an Earth Sovereign. It was like a heavenly chasm that blocked the way of the vast majority of Strong Persons.
Apart from requiring extraordinary talent and opportunities, it also demanded vast, continuous resources. After all, not everyone could be like the original body and obtain the Plane Embryo, gaining the support of a continent's origin energy.
Although the Clone had borrowed the energy of the Ancient Thunder River when breaking through to Heavenly Sovereign, Thunder Prison