This location is infinitely close to the upper mantle.
The upper mantle is a transition zone composed of molten material nearly a thousand kilometers thick.
Calling it a sea of lava is not an exaggeration.
The energy contained within is unimaginable to Quan Yi.
Unknowingly, Quan Yi had already plunged into the mantle layer, a depth that no living being could reach.
After admiring it for a moment, Quan Yi regained his focus and began searching for hidden dangers.
Here, the high temperature brought about by the high-pressure environment can amplify the effect even without Quan Yi actively absorbing it.
When Quan Yi activated the Scarlet Dragon Horn, the vast fire elemental energy was rapidly converted into Quan Yi's soul power, replenishing his consumption.
"Senior Yan, if we're not mistaken, isn't that the potential danger of Blue Silver Island!"
Without Yan Dragon King's reminder, Quan Yi himself used his Dragon Eyes to observe the anomaly.
He saw a long line of magma extending along the weak parts of the Earth's crust from the high-temperature molten material of the mantle.
Unlike a river, this was a tributary branching off from the sea of lava, flowing upwards.
"That's right, this tributary is constantly rising under pressure.
Most of it will cool down and solidify into solid matter along the way, but a portion will erupt from the surface, forming a volcanic eruption.
However, this magma seems to show no signs of solidifying."
Yan Dragon King analyzed the possibility of a volcanic eruption based on his experience.
Seeing this, Quan Yi was not alarmed. He quietly watched the magma slowly spreading upwards, and an idea popped into his mind.
"Senior Yan, if the island's hidden danger is it, I think we should be able to solve this problem."
Yan Dragon King also smiled and said, "Yes, fortunately, it involves magma. Otherwise, it would take some effort to solve it.
However, this matter still needs careful consideration. Let's first investigate the specific situation."
Their conversation was much more relaxed than before.
Taking advantage of the environment, Quan Yi could probe the underground situation for a long time.
In order to further save soul power, Quan Yi even embedded himself from the rock layer into the upper mantle full of molten material.
Just as he was probing for information, Xiao Jin, hidden within the Martial Soul, let out an excited dragon roar.
It anxiously roared in one direction.
It was also the first time Quan Yi had seen the quiet and steady Xiao Jin behave so excitedly.
Yan Dragon King also felt something and said, "Quan Yi, you are very lucky."
Just as Quan Yi was feeling puzzled, Xiao Jin conveyed its meaning through spiritual communication.
It said that it smelled a scent it liked.
It was at this moment that Quan Yi suddenly understood. Without saying much, he swam directly towards the upper layer.
When the distance closed, without Xiao Jin's reminder, Quan Yi himself used the body of the Dark Gold Yang Dragon to feel a magnetic-like sensation.
At the same time, Quan Yi could feel the metallic soul power in his body beginning to cheer.
It was at this moment that Quan Yi finally arrived at the target location.
A vast mineral vein exuding metallic energy.
"We're, we're rich!"
Quan Yi was stunned on the spot, with only this sentence echoing in his mind.
An hour later, on the west coast of Blue Silver Island, Huo Wu noticed a familiar aura appearing in the sea area a few miles away.
She immediately called out to Quan Li and Yun Qiong, saying, "Look, Xiao Yi is out."
The next moment, a majestic heterochromatic dragon darted out of the water and flew towards them.
The Dark Gold Yang Dragon was extremely fast, reaching the coast with a flick of its tail and transforming back into a human form in mid-air.
As soon as Quan Yi landed on the ground, Huo Wu began to ask him.
"Are you injured?"
Quan Yi rubbed Huo Wu's hair and smiled, "No, everything went smoothly."
Yun Qiong asked, "How is it? Is the situation serious?"
"It's much better than I imagined. I don't think we need to move away from the island."
Then Quan Yi briefly recounted the underground situation and finally mentioned the solution.
"This is caused by the collision of rock layers causing the underground magma to flow out of the surface. Now its location is still very deep, and it will not affect the island in a short time.
However, to better eliminate the hidden danger, we must guide the magma to flow in other directions to prevent it from continuing to accumulate.
Fortunately, the problem is not very serious at this stage, and we have plenty of time to deal with it slowly."
Now, everyone's hearts that had been hanging were finally put down.
At this time, Quan Yi smiled slightly and continued, "Moreover, this dive, we also discovered that there are many mineral veins hidden beneath Blue Silver Island.
As long as these ores are mined, we don't need to painstakingly transport various metals from the land. We can directly build all the necessary machinery here."
"Really!"
The successive surprises made Quan Li and Yun Qiong feel extremely excited.
The scarcity of metal minerals is the biggest difficulty faced by the Quan family.
Iron ships, steam engines, agricultural machinery, and other development-related items all require a very large amount of metal.
To be honest, the minerals purchased by the Quan family in recent years can basically reach the metal consumption of a kingdom for twenty years.
It is actually unbelievable that a family with a total population of only about 100,000 consumes such a huge amount of metal.
However, the metal mining volume of the entire Douluo Continent is limited, and in order not to be noticed by the authorities, the number of mineral veins controlled by the Quan family cannot be too exaggerated.
This leads to their greater demand for metal.
Now, hearing Quan Yi say that there are ores under Blue Silver Island, of course they are happy.
"Yes, I have already recorded the locations of the shallow mineral veins. When the manpower is gathered, we can try to mine and refine them."
Detecting minerals is another application of vibration perception.
By using the different transmission speeds of vibrations in different materials, different foreign objects buried underground can be detected.
And ore is the most obvious material among them.
It was also at this time that Quan Yi truly understood the horror of vibration perception.
Investigating geology and finding minerals, these things that originally required various complex technical means and knowledge, Quan Yi himself could easily do.
Finding minerals, what is the difference between this and directly picking up money on the ground?
Quan Yi increasingly felt that choosing the Sea Lizard Flame Dragon King first among the four hundred thousand-year soul beasts was the most correct decision he had made.
The other three hundred thousand-year soul beasts combined may not be able to play the role of Yan Dragon King alone.
