He could feel a thick layer of rock above him; it was the foundation of Azure Wave Island and the boundary of the protective array guarding the island.
The island’s protective formation covered the entire island from above and all around, possessing immense power capable of withstanding attacks from second-level Great Luo Golden Immortals. However, the formation ignored this deep underwater fissure.
Because the underwater terrain was too complex, with crisscrossing currents, not even Shen Tianhai could cover the entire island base, which was the key for the aquatic creatures to find this passage.
The gap was getting narrower, and in some places one even had to turn sideways or bend over to pass through. Lan Yuan felt his water scale armor rubbing against the rock wall, producing a very faint rubbing sound.
Every swipe made his heart race, afraid that the subtle sound would be detected by the guards.
He held his breath, moving forward with minimal effort, his muscles tense, and his eyes vigilantly scanning ahead. The shallow sea and deep currents behind him followed, watching him closely, not daring to relax in the slightest.
After crawling for about half an hour, the water in the passage suddenly became torrential, carrying mud and fine sand as it crashed in from the front.
The water slightly stung their faces as it hit their bodies, and the water pressure suddenly increased, like a giant invisible hand was squeezing their bodies tightly.
Lan Yuan knew that the most dangerous part of the road had arrived. He raised his hand to signal the two people behind him to stay close and move forward quickly following the rushing water.
Shallow Sea and Deep Current followed closely, holding their breath and letting the current carry their bodies forward. The three of them swayed violently in the turbulent water, but they maintained their formation and did not split apart.
With precise control over the water flow, Lan Yuan carefully avoided the sharp protrusions on the rock walls, directing the water flow and carrying both shallow and deep currents, fighting his way through this turbulent area.
When the three of them finally got out of the turbulent water and the road ahead suddenly opened up, they couldn’t help but breathe a sigh of relief, but they still hesitated to breathe, and only regulated their breathing quickly.
Lan Yuan poked his head out of the gap and carefully observed the surrounding environment. After confirming there was no danger, he slowly breathed in the underwater air. Although it was a bit cloudy, it made his tense nerves relax a little.
Before them stretched a wide underground water channel, the water level was about three zhang above the rock wall above their heads. On both sides are man-made stone walls, the surface is covered with water stains and moss, damp and slightly slippery.
The water was as calm as a mirror, reflecting the faint light coming from a distance. The light was pale blue, possibly emitted by a type of mineral that had the properties of water.
“They’re out.”
Lan Yuan said in a low voice, his voice echoing for a moment in the closed underground space before being swallowed by the water, “This must be a natural cave under Bibo Island.”
Shen Tianhai turned it into a water storage facility; the sea water under the Lan tide must have been drawn from here.
The three swam out of the gap, surfaced, and quickly surveyed their surroundings.
On one side of the cave, there are stone steps covered with blue stone slabs. The surface is covered with moss, making it slippery and difficult to walk on. The stairs lead to a tightly closed iron gate on a higher level. The iron gate was around two zhang tall and one chi thick, and looked very sturdy.
The iron gate was engraved with rough runes that glowed with a faint blue light and emitted water-attribute spiritual energy fluctuations. This is a unique rune of the aquatic race, used to maintain the circulation and flow of sea water. It seems that this is the source of sea water used to extend the life of Lan Tide.
Lan Yuan’s gaze fell on the iron gate, and following the direction of the gate, he combined it with the topographic map in his memory to imagine the location of the square in the field.
Based on the topography, the stone pillar that Lan Tide was tied to was located about ten feet directly above this door.
The sea water covering it was drawn from this underground water area through some kind of formation, and the node of the formation should be behind the iron gate.
“Shallow Sea, you stay here and provide support.”
Lan Yuan’s tone became serious, and his gaze fell on Qian Hai, “I and Shen Liu will go up, sneak into the square, and save Lan Tide.”
If we don’t return within half an hour, that means we’ve been exposed. You immediately return along the same path and tell the leader that we have failed. Tell him not to send anyone else to risk their lives. Shen Tianhai had set a trap; we are no match for him.
FAQ Novel
Q: What is the significance of the temperature gradient?
A: The temperature gradient indicates the presence of an artificial channel.
Q: Where does the discovered crack lead?
A: The crack leads to the underground waters in the center of the island.
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