In addition to the energy, in fact, there was not much loss on this trip, and the dead and wounded troops could basically be resurrected with the resurrection altar, and the cost was only one resource.

There are definitely more things to be gained in this wave than such a small resource.

After Yasen promised, he couldn't help but ask with some doubts.

"Your Excellency, I wonder how you can rescue the soldiers trapped inside?"

Ji Chen showed a mysterious smile, walked on the sea, walked on the tidal flats, and came to the front of the hill.

Pick a hole at random to enter.

Although Yasen and the others were puzzled, they still followed behind.

Walking into the cave entrance for dozens of meters, the way was blocked by collapsed rocks and dirt, and some elven warriors were digging hard with various tools, but in the face of the rocks blessed by spells, such an inefficient excavation method had little effect.

Seeing Ji Chen and Yasen walking in, they all stopped what they were doing and saluted Yasen.

"Lord Yasen."

Then he saluted Ji Chen with a serious expression, with a little gratitude in his eyes.

They all knew that Ji Chen had wiped out the fraudsters who wanted to escape secretly.

Ji Chen waved his hand and said,

"How's it going?"

The elven warrior looked at Yasin first, and after getting his nod, he said.

"Because the fraudsters have been using permanent spells for a long time to continuously strengthen the mountain and the internal structure, the explosives they set up in a hurry have not been completely blasted, and the actual blasting effect is far from enough to blow up the entire hill, only the surface cave and the internal space of the mountain have collapsed.

So in addition to some of the fighters who were killed by the directly collapsed rocks, there were also a considerable number of people who were trapped in deep caves. ”

"We didn't dare to use explosives to clean it up for fear of causing another collapse, but with the current excavation efficiency, I'm afraid that the brothers inside won't be able to hold out until the time of the excavation......

"The biggest problem at the moment is that we don't know where the brothers are trapped......"

Ji Chen bowed slightly.

The situation was a little trickier than he had imagined, but it was still under his control.

In the surprise of the elves, he slowly raised his right hand, and a wave of mana condensed.

Immediately, they heard the sound of a stream of water, and just when they thought it was an illusion, a floating stream of water came in like a snake from outside the cave, and with Ji Chen's gesture, it burrowed into the crack in the rock.

Water is visible and invisible.

It can be turned into a sharp blade that cuts the enemy under Ji Chen's subordinates, or it can be restored to a soft essence to arch its drive.

Super plasticity is a great advantage of water, and attaching spiritual power to water becomes a flexible detection method, which can deeply explore all kinds of ordinary and hard-to-reach places.

Under his control, the water drilled through crevices and hollows, turned, and even flowed upward.

Soon, his eyes froze.

Seeing this scene, Yasen, who hung his heart, couldn't help asking.

"How's it going?"

Ji Chen retracted his spiritual power slightly, "There are indeed dozens of elf warriors trapped in the depths of this passage, but it seems that the situation is not good, and many elves are injured. ”

Yasen's eyes lit up slightly, but his eyebrows wrinkled slightly, the problem came, although he found the trapped soldiers, how to rescue them as soon as possible?

Feeling the gaze of Yasen and his elves, Ji Chen smiled slightly.

The water contracted back, and the tip condensed into a giant drill almost the diameter of a cave, with threads on the surface.

The soft water turned solid at this moment, and the drill bit began to swirl into the clogged rock, making a rumbling sound.

Rocks, such as pickaxes and pickaxes, which are difficult to break with ordinary tools, are very fragile in the face of the drill bits made of water.

Broken stones and dirt were constantly being brought out by the recessed threads on the drill bit, and a layer of rubble quickly piled up on the ground.

"Don't be stunned, dig out all the gravel and dirt that you dug up, don't get in the way here."

"Also, strengthen the excavated passage to avoid a secondary collapse."

Ji Chen's words made the elves who were already stunned suddenly wake up, nodded hurriedly, and began to clean up the rubble, snapping the supporting wooden stakes into the sides and topping.

I was shocked.

And this kind of operation!?

Looking at them like dumb melons, Ji Chen felt a rare sense of superiority over people from another world that he had not seen for a long time.

This is especially true for elves who claim to be powerful and civilized.

If a player comes here, they will surely shout that this is not a drilling machine, right?

After Ji Chen's condensation and manipulation, it seems that a simplified version of the thing has been created, only the drill bit part, and the rest are all operated by manpower.

This is an organic combination of modern scientific theoretical thinking and the fantasy mana of another world.

It's just that the energy source of his drill bit is mana, and Blue Star uses diesel.

The water that blessed him with mana became very hard, tougher than metal, and he was extremely efficient at digging through rock and dirt, because the nature of the water meant that the drill bit did not have to worry about damage at all.

Yasen looked at the water drill bit that was spinning and digging vigorously under Ji Chen's control, and there was some surprise in his eyes, "Such ingenuity, Your Excellency really surprised me a little. ”

"Looks like you've seen anything like that?"

Yasin smiled, seemed to remember something, and nodded.

"Although the shape of this drill bit is slightly different, it can still be seen that it is very similar to our elven ironwood exploration drill, or alchemy drill bit, at least quite similar in form......

"But compared to the two, whether it is a metal drill bit or an enchanted ironwood drill bit, your water drill bit obviously has more advantages,

It's a pity that this is made with the blessing of your mana, not the crystallization of technology, nature and production, but it does provide us with a new idea, maybe we can let the Dru Yin of the Imperial Capital Research Institute study in this direction, and see if we can cultivate drilling materials that can transition between liquid and solid forms, and have considerable elasticity......"

In this speech, he felt that Yasen couldn't help but show off his technology while praising him.

"So the elves have similar tools for digging?"

Yasin was stunned, "Of course, each elven mine has a similar excavation device in it, otherwise the low efficiency of manpower excavation will not be able to meet the huge mineral needs of the empire." ”

Ji Chen nodded.

The alchemy technology of this fantasy world is very developed, although the number of ways to achieve it is far from the same, but the level of technology in some aspects is no worse than that of Blue Star.

The speed of water drill digging is very fast, and between Ji Chen and Yasen's conversation, he has advanced dozens of meters, which is more than a hundred times faster than manual digging.

More than ten minutes later.

After the water drill bit broke through a layer of gravel, the sense of blockage suddenly disappeared, and Ji Chen moved in his heart and restored the drill bit to water.

A cavity appeared in front of them that had not collapsed, and dozens of elven warriors were looking at them with excitement on their faces.

"Finally someone came to save us, I thought I was going to die here."

"Wait, is that Yasen-sama in the back? Could it be that Lord Yasin himself came to save us!? ”

These elven warriors subconsciously looked at Ya Sen, who was standing behind, and ignored Ji Chen, who was standing in front.

Seeing this, Yasen's face changed slightly, and he scolded: "It was His Excellency Ji Chen who saved you, and I don't want to thank you quickly." ”

Hearing this, they were slightly stunned, and immediately said, "Your Excellency Ji Chen, thank you very much for your assistance, please forgive us for the offense just now." ”

Ji Chen waved his hand indifferently, he was already a little accustomed to the arrogance of elves.

Anyway, this rescue is essentially a transaction, so there is no need to think about it.

Just asked.

"Are there any elves or duchy soldiers trapped further down?"

One of the elves immediately replied: "After going a few dozen meters deeper, there will be two forks in this cave, and there is a squad of warriors trapped in the left fork in the road, and the deepest part of the fork in the right side is a storehouse for the fraudster's stockpile. ”

Storeroom?

Ji Chen's heart moved, but he knew that saving people was important at this time, and it was not the time to search, so he turned around and said.

"Let's keep digging and let the wounded elven warrior get out of here first."

Yasen nodded, and said to the elves who followed behind: "You send the wounded soldiers out, and the rest of the soldiers who are not injured continue to follow, and assist His Excellency Ji Chen to carry the gravel map and clear the road!" ”

"Yes!"

After all the elves inside came out, Yasen said to Ji Chen, "Your Excellency, let's continue." ”

Ji Chen nodded slightly, condensed rhinestones again and continued to dig.

After digging another thirty or forty meters, a fork in the road appeared in front of me.

Without delay, digging the cave on the left side as the elves said earlier.

By this time the area had begun to slope downward, and the collapse of the rock formations above did not seem to have affected the area too much, except for some rubble blocking the road.

Faintly, you can hear an elf digging backwards.

Ji Chen didn't stop the rhine, and he wasn't afraid that the drill would hurt the people who were also digging behind, he was very confident in his control.

The elves inside were sweating profusely and digging through the rubble when they suddenly heard a strange whine.

"Wait, did you hear any strange noises?"

"Is there one? You're not trapped here, hallucinating, are you!? It's over, you're losing your mind before you get out. ”

"Well, I think I heard it too, like the sound of some kind of rig."

"Fart! Even if Lord Yasen were to transfer an alchemy drill from somewhere else, it would take at least half a month, and how long had it been now? Not for half a day!

If there really is, I'll give you all the money when I go out! ”

At this time, they listened carefully again, and there was indeed no strange whining sound, which had become a distinct rumbling.

Soon, the sound became louder and louder, and finally the pile of rubble in front of him was knocked open, and a huge water-blue drill bit suddenly appeared.

In front of the elf who swore that there was no abnormal noise, the distance of less than ten centimeters slowly stopped, and he was so frightened that he jumped backwards, and his soul almost didn't fly out.

The drill turned into a cloud of water, revealing a rather handsome human male in the background.

I saw that this male human glanced at them, and said to the back: "Found it, there are no more and no less elves in a team." ”

.....

Walking out of the cave, Ji Chen looked up at the sky, it was noon.

Turn your head to look.

At present, there is only this one cave that has been opened, but there are at least dozens of soldiers trapped like this, and it seems that the whole day will be spent here, but thinking of the division after that, the body is full of motivation again.

Without further ado.

Led by Yassen, find the next cave that collapsed.

It's the same.

First attach the spiritual power to the water flow, and then drill into the gap to find out if there is trapped inside, if there is, the condensation rhinestone will open it, and if not, put it on hold for the time being.

Sometimes in the process of excavation, you can also find a lot of elves and principality soldiers who were killed by the collapsed rocks, if it weren't for Ji Chen's strong control, I am afraid that the high-speed rotating drill bit could tear the corpse beyond recognition, and blood and flesh were splashed.

Every time he found the corpse of an elven warrior, Yasen's face became gloomy.

However, as the elf had said earlier, the fraudster seemed to underestimate the sturdiness of the cave structure they had reinforced many times, and the hastily placed explosives did not cause a serious collapse.

Experienced fighters, sensing the impending collapse, quickly found the sturdiness of the structure.

Along the way, most of them are still alive, although there are many injuries.

Under Ji Chen's efficient excavation speed, more and more elven warriors and principality soldiers were rescued and saw the light of day.

Outside the cave, Ji Chen's name gradually spread among the rescued elven warriors and Duchy soldiers, and without exception, they all felt very grateful to this person who saved them from the dark cave.

Of course, this is also something that Ji Chen only learned after he came out.

At this time, he was still in the cave of the Black Man, digging like a miner with a drill, expecting to dig ore (referring to elves and Duchy soldiers).

Soon, another cave was opened, and another group of elves and duchy soldiers were rescued.

Ji Chen waved his hand and dispersed the drill bit.

Breathing is somewhat rapid and heavy.

Maintaining the drill bit for a long time and making it rotate at high speed is still quite mana-consuming.

But at the same time, his ability to control mana and water is slowly getting stronger, the mana output is no more, no less, meaningless loss is reduced, and the accuracy is also improving.

If he used to be worth tens of millions, but he spent money lavishly, then now he is living within his means, and every money is used on ideas.

The efficiency of mana utilization is greatly improved.

Ji Chen's mind flashed, and he suddenly had an idea.

Wouldn't it be more efficient for him to generate two drill bits, three or more drill bits at the same time, and let them work at the same time?

Thinking of this, his heart was full of interest and he decided to give it a try later.

Wait until the mana in the body recovers.

Condensation rhinestones again.

This time, it's no longer one, but two.

If it's just simply condensed, even if there is no pressure on a hundred or a thousand, it's like a condensation water blade, and after the condensation, throw them out directly and it's over.

But getting them to move according to a certain pattern at the same time is a difficult thing to do.