After arriving at the East Sea, Luohu directly found a desolate island, set up the Mysterious Black Guard Array to isolate it from the outside world, then bent down and began digging.
From then on, undersea earthquakes frequently struck the East Sea.
The calm sea could suddenly heave into towering waves at any moment. Corals shattered amid the tremors, the Water Tribe fled in panic, and the entire East Sea fell into inexplicable unrest.
Candle Dragon ordered an investigation into the cause of the undersea earthquakes. But after searching for a long time and finding nothing, he assumed Return to Ruins was responsible and did not pursue the matter further.
The disturbances in Return to Ruins provided perfect cover for Luohu's excavation.
The farther down he dug, the harder the earth's rock became. Luohu had already reached the Innate Rock Layer.
The Immortal Slaying Sword hummed in Luohu's hand. He directly thrust its blade into the seabed rock, and with a sharp clang, the Innate Rock Layer was sliced apart by the blade as easily as thin paper.
Half an epoch passed. Demons ran rampant across the Western and northern Primordial World, yet Luohu never showed himself, as though he had vanished from the Prehistoric Universe. This immediately put Li Fan on guard.
Inside Grand Unity Palace, Li Fan's expression was grave. "Could Luohu have gone looking for the Underworld?"
Goddess Wangshu spoke with some disapproval in her voice. "The Underworld is the most yin-filled place in the Prehistoric Universe. If it were truly that easy to find, Earth Emperor Yuejian would have found it long ago when he explored the Earth's veins."
Li Fan shook his head. "Then was different from now. In this era, the Blood Sea has emerged. That is one of the entrances to the Underworld,