The interior of the Dragon Bone Boat was shaped like an elongated oval.
The ceiling rose dozens of meters overhead, studded with many glowing pearls that illuminated the entire space.
A clear, shallow river wound through the space from front to back. Hundreds of exquisite waterside pavilions stood in an orderly arrangement along both banks.
At the river's source stood a square pool built from stacked stone blocks. At its center, droplets of water fell from the edge of the millstone-sized shell of a turtle statue rising above the surface, like a curtain of water.
Chen Mu stood by the pool, leaning against the grayish-white stone railing as he studied the turtle statue with great interest.
When he sent a trace of Dharma power into the Dragon Bone Boat, mist immediately sprayed from the turtle's nostrils and gathered into a cloud in midair.
Light and shadow shifted within the cloud, revealing a dim underground Water Vein.
This cloud was a built-in technique of the Dragon Bone Boat called the Luo Yan Mirror. It was equivalent to the boat's eyes and could survey the area around it.
"Academy Supervisor, if we continue descending along the underground Water Vein beneath Tangshan Hot Spring, we'll reach the Earth Fire Lake in a few days."
"That is where earthfire and magma converge, and it connects to the Fire Eye of the Heavenly River Grotto-Heaven."
"From there, we can enter the Heavenly River Grotto-Heaven."
The Heavenly River Grotto-Heaven...
Chen Mu raised his brows slightly.
He recalled the time they had migrated from Yunzhou to Haizhou. Back then, they had also entered a Cave Heaven called the Heavenly River Law Realm.
"The Heavenly River Grotto-Heaven was opened by the Seventh Generation Mansion Lord of the Chenzi Tianhe Water Mansion."
"Unfortunately, his descendants proved unworthy. The three