After Cornell made the words clear, Sharron was no longer euphemistic, saying: "This is not the point, leading to the underground of the capital, you may pass by many underground creatures' nests, and the underground world is complicated, even we are not too big. Take care of it.”

There are many magical creatures in this world. The four living spaces of land, sky, ocean, and underground have their own unique way of living.

These four spaces are self-contained and complement each other. Life in each different field will always be tied when entering another field.

Sea beasts can easily kill humans who enter the ocean, and stranded sea beasts can easily be killed by humans.

Life on the surface that is not adapted to the dark environment enters the ground, and even if there is light, it will lose its sense of space and be easily attacked to death.

"Underground creatures?" Xiang En wondered, "Isn't that only 500 meters underground?"

The academy's books have introduced subterranean creatures, and he can only remember a rough outline. The content is roughly that subterranean creatures basically live in complex burrows 500 meters underground, rarely come to the surface, and rarely follow Upward passage into the shallow underground.

Sharon explained: "Some powerful subterranean creatures are not affected by too much light, they are attracted by sound."

"Is that so..."

Xiang En bowed his head and thought for a moment, then finally shook his head.

"Although there are some risks, the benefits of building underground tunnels are greater. Trust me, the surface is more dangerous, and underground tunnels are built to save more people, and your parents!"

For the sake of having said that, Sharon also realized that the surface seems to be more dangerous than the underground, but the surface has more space for movement, which naturally makes people feel more at ease than the cramped underground.

The spiritual connection skill was activated, and Xiang En passed the picture of the Kuroshio siege he saw to Sharon in the form of spiritual connection, and finally made her agree to the construction of the underground tunnel.

Due to the huge amount of work, the labor of the trolls was also requisitioned, and the trolls took over the work of ironmaking and iron transportation.

After a vigorous operation, the project officially started on the third day.

The pale-faced York and Mira started to release magic at the selected positions, with Xiang En behind them, like a whip whipping them all the time.

Three kilometers a day is enough to drain their world for a whole day.

The style of the tunnel is square, with openings for metal load-bearing columns on both sides, and four metal columns have to be filled for every ten meters of advancement.

The biggest advantage of magic construction is that there is no need to transport the muck away, and the tunnel is much stronger than the channel paved with cement.

After the start of work, Naka and Andrea will be responsible for the cooking. The two need to prepare their own food, as well as food for the trolls.

Although Darusa and the others don't know why humans still dig tunnels, as long as they have food and shelter, they will do it.

In their opinion, food is the most valuable, and good employees never ask for more.

The hard-working troll brought five bullock carts in and out of the manor, transporting the iron ore deep in the forest to the ironworks.

The iron smelting plant now operates two shifts, and the demand for iron ore is huge, and it is not enough to handle hundreds of thousands of tons a day.

A troll with a handful of strength is very efficient at mining, and can transport thousands of tons of iron ore back in a day.

Sometimes they also dislike the slow speed of the ox cart, and directly use the troll power, or pull the cart, or carry the iron ore back to the manor.

The reason why they are so active is that Xiangen has come up with a performance reward. The labor team with excellent work performance within three days will be rewarded with five kilograms of beef.

There are five troll labor teams, and each team has 20 trolls, basically an adult troll warrior with 19 working old and weak women and children.

Those five kilograms of beef are not pure meat, but beef stewed by Xiang En with a secret sauce, which is a supreme delicacy for the trolls.

It is not an exaggeration to let them fight for their lives. Gradually, the working attitude of the trolls changed.

Two weeks after the performance reward system appeared, Xiang En found that something was wrong with the trolls, and hurriedly revised the performance system.

For those five kilograms of beef, the trolls almost fought, especially those young trolls, Hua Qiang had to say one sentence: young and vigorous.

The revised performance system has been changed to, once a week, each team will receive one kilogram of beef per week, the top performing team will receive an additional three kilograms, and it is stipulated that they cannot stumble and make it impossible for other teams to complete index.

Xiang Endu praised himself for his generosity, the atmosphere of tension among the trolls was no longer there, and the work efficiency was also improved.

In two weeks, the tunnel has only moved 30 kilometers. There were two accidents in the middle. One was an underground river, and the other was an underground hole.

They couldn't go straight, they had to divert, or forcibly interspersed, ignoring terrain obstacles.

The huge underground cavity is connected to a huge underground space. The space and the tunnel go deep into the ground, which may be a path for underground biological activities.

Xiang-en paved the way here, built a drainage canal, and let Jin Lai paint the lighting magic, preparing to turn it into a rest station.

In addition, the underground creatures may look ugly, but many of them are also edible.

Keep digging!

The two human-shaped shield machines continued to work. The process of digging the tunnel would always encounter various difficulties and obstacles. Xiang En was mentally prepared.

Rao is like this. When the tunnel reached 60 kilometers, they still encountered a big problem.

When the stone wall turned into a square channel under the influence of the earth element magic, the numb York and Mira suddenly regained their energy. With a little effort, the rock in front turned into a dark cave.

Seeing the appearance of the big hole, one man and one elf seemed to be a victorious player, and quickly collapsed to the ground ~lightnovelpub.net~ weeping with joy.

The appearance of the void means that they can get a short rest.

When encountering small voids, Xiang En will stop and let them rest.

When Xiang En saw the void, he immediately took a few steps forward, his hands gathered magic power to quickly shape, and the white goshawk appeared in his hands like magic.

Standing on the edge of the hole, he threw the letter eagle to En and was about to retreat, but in the next second, a "wall" suddenly rose from the dark hole under his feet, knocking the letter eagle away in an instant.

There was a rumbling sound around the earth, and when faced with the turbulent airflow as it ascended at close range, the air in the tunnel was immediately drawn into the large tunnel like a straw in the mouth.

Xiang En, who was standing on the edge of the tunnel, was pushed back by the strong airflow, and was sucked directly into the tunnel by accident.

York and Mira, who were paralyzed on the ground, did not expect such a situation to occur, and their bodies were immediately sucked into the deep hole and quickly fell down the dark ground.

The suddenly rising "wall" is like a syringe, sucking Xiangen down into the ground. In a weightless state, Xiangen's scalp is numb, feeling the horror of falling from a height and pulling his soul, making it difficult to breathe.

Vaguely, he could still see the mucus on the rising "wall" beside him.

York and Mira, who were also stunned, should be calmer. They still contained most of the magic power supplemented by Xiang En, and they quickly released the magic.

The violent wind swept up the bodies of the three of them, slowing down the speed of their fall. Green vines spread out from the stone wall beside them, hanging the three of them on the cliff.