The trickiest part of digging a hole underground is determining where to go.

In reality, this is the biggest problem, often in order to open up the mountain tunnel, both sides of the construction at the same time, the result of digging for a long time no one encounters anyone.

Ensuring accuracy requires a lot of mapping and familiarity with the terrain.

This dilemma until entering the information age, human beings with the help of computers finally avoided that kind of oolong, and then after the emergence of the shield machine, its error is very small, the error unit is actually millimeters, do you dare to believe?

As for the wizarding world, of course, you can't use the scientific method.

Dwarves, underground gnomes, rock halflings, these races are all called deep earth races, they are born with the ability to determine the direction underground, and the error of the cave dug is almost not much worse than that of the shield machine, which is really awesome.

Mages also have a way to measure the soil formation of the target land in great detail, called Deep Earth Prophecy, which is a spell of the Prophecy faction, and the grade is B.

Of course, An Yi pointed out that they were just digging a tunnel more than 400 meters long and about 20 meters deep, and there was no need for such a big movement, and the task of determining the direction was enough to be handed over to Apple Tea.

Although he is a normal halfling, rather than a rock halfling with an innate ability to perceive the subterranean, he has a listening skill that allows him to determine an approximate location by sound.

Of course, there is, and it is very large, but it is sufficient.

After all, their goal is a military camp, not with another wave of people digging tunnels, as long as the general direction is correct, don't dig too much or dig less.

Therefore, now Apple Tea put his ears on the wall of the cave, listening to the sound above, and An Yizhi was holding the light ball of the Light Technique, holding the mountain and river community map, moving forward at a speed like a stroll.

The dirt in front of him wriggled like a living creature under the influence of magic, parted from side by a pair of invisible hands, clinging to the sides.

And at this time, it is necessary to point to the 'simple alchemy' under his feet.

Since the staff saved him from the trouble of sketching a magic circle, the usefulness of the skills that come with the Mithril Robe of Simple Alchemy began to increase.

The soil that was divided into two sides by the Mountains and Rivers Society Diagram quickly solidified and compressed under the action of alchemy, turning into hard rock, which not only saved the trouble of transporting the excavated soil, but also used it to strengthen the tunnel, so that the two of them would not be buried underneath halfway through......

This is not unusual.

Pay attention to the words from the NPC mage, you will know that every once in a while, you can always hear a reckless mage using the Thor Stone Technique to go around blindly, and as a result, he lost his way and trapped himself in the following example, even digging a pit and burying it is saved, and it is estimated that it will become a fossil in thousands of years......

An Yi pointed out that the method they used was already a method with a high success rate and security, but I am afraid that only players dare to do it, even if it is very difficult to let the dwarves do this job, especially when they have to act secretly and cannot call on more manpower and resources.

The danger of the underground Jedi is far more than a 'landslide', because they don't have any information to help them, they don't know anything about the geological structure underground, and they are likely to fall into a hole in the ground while digging up, or dig out groundwater and so on, causing the cave to be flooded.

You must know that not far from the barracks is the 'Mirror Lake' with a small area, and it is not an accident to dig up groundwater or something.

Fortunately, none of these fucking things happened, and An Yizhi rarely exploded once, but even if there was no emergency, and with the help of the combination of Shanhe Shejitu + simple alchemy, it took them nearly an hour to dig to the predetermined location.

The speed of this manpower excavation is already fast in the eyes of reality, but if it weren't for the fear that the magic fluctuations would be too big and might attract attention, An Yizhi would not be able to open such a far tunnel in a few minutes.

After all, things in the wizarding world can't be explained by science......

"I heard neat footsteps, it should be the army, yes, passers-by will not have such neat footsteps."

Apple Tea said listening to the voice coming from the cave wall, An Yizhi also stopped digging, he opened the system list, and saw that the game time on it was displayed as more than half past six in the afternoon, and the sound of neat footsteps may have been sent by the soldiers who were party to eat in the cafeteria. Even if they were wrong, the sound of neat footsteps could be heard indicating that they had entered the barracks, directly below it.

And now there is another problem, they want to make an exit.

Of course, it is not possible to dig an exit casually, in case the two of them appear in the middle of the cafeteria, surrounded by soldiers with rice bowls ready to eat, and see two guys emerging from the ground......

- That must have been a particularly embarrassing scene.

Since An Yizhi intends to do this, he is naturally a little sure, this person doesn't like to take one step at a time, and prefers to plan a few steps in advance before taking a step.

As it is often said, plan and then act.

He pulled out the manuscript of Mischo's prophecy and whispered:

"Peeking into the Eye"

The Peep Eye is not as effective as the Mystic Eye, because the Mystic Eye is the size of a fist and is too big, while the Peep Eye is at most the size of a glass ball, which is better concealed.

Both are translucent and invisible, so it's the best choice to spot ahead of time.

The peep slowly rose under the control of An Yizhi, and plunged headlong into the soil layer above.

Under the influence of the Mountains and Rivers Society, peeking through the soil layer is like passing through liquid, without any hindrance.

Ann Ichichi and Appletea stared at the images sent back by the peep eye until the soil disappeared and the deep night sky appeared on the screen, along with a magnifying sole......

Peeking into the MONOCULUS and being stepped on......

The soldier who stepped on it looked back suspiciously, and An Yizhi quickly let the peeping eye go back to the ground, and the place where the latter saw was only a shallow pit, and the soldier didn't pay much attention to it, thinking that he had stepped on the stone, until the soldiers in the line walked away and the peeping eye resurfaced.

Thanks to the fact that the Eye is only the size of a glass ball, it is impossible to fool the past by changing it to a fist-sized arcane eye.

Let the peeping eye turn around, the screen shows that the place where it emerged is an alley in a military camp, seeing that there are no soldiers passing by, peeping magic eye quickly flew up, keeping a height of about one meter against the wall and slowly flew forward.

This feeling is relatively novel, a bit like controlling an aerial photography drone to play infiltration reconnaissance, given that An Yizhi has never played 'Demolition No. 6', so the operation is a little rusty.

However, he has a bit of a talent, using shadows and the translucent nature of the peeping MONOCULUS to always find a hiding place along the way, such as in the dark of the corner, among the weeds on the side of the road, etc.

In addition to observing the exit, the more important task of peeking into the magic eye is to get the route.

Their goal is to grab a magic mecha and then drive away, at least to know where the hangar is, the barracks are no bigger than the town, and it is impossible for him to go in and visit casually.

Peeking out of the alley, flying along the walls, it passed a connected group of houses that looked like officers' quarters.

Even for an officer of the Imperial Army, it is impossible to live too luxuriously in the barracks, but compared to the soldiers' Chase Shop, it is already considered an emperor-level enjoyment.

Appletea pointed to the picture coming from the magic screen and said:

"Brother An, wait."

"Huh?"

"Can you zoom in here?"

The place Appletea was pointing to was an officer who was about to push the door out, but it was a little far away and it was not easy to see clearly.

"That's right, peeping into the magic eye is not a secret eye, this thing doesn't have a zoom function."

An Yizhi said strangely:

"Did you find anything? I can try to get closer. ”

"No, no."

Apple Tea shook its head:

"Maybe I confessed that I was wrong, and it has nothing to do with us, so I didn't say it."

Appletea's reaction was a little inexplicable, but An Yizhi didn't pay attention to it, and continued to control the peeping eye to fly forward.

Due to the fear that there is something like an enchantment in the sky above the barracks, you must know that whether it is the Secret Eye or the Peeping Eye, this kind of detection spell is not uncommon, and the army will definitely take precautions against this, if it is not the Peep Eye invading from the underground, but approaching from the sky as usual, 100% will be knocked down by the Imperial Army.

This also leads to the fact that the peep eye can't fly too high, so it can only advance step by step along the road in the barracks, otherwise it is just a matter of raising the field of vision and finding a building that can accommodate the magic mecha.

That thing is more than ten meters high, even if it is stored in a squatting or kneeling position, even if it is lying down, it still needs a lot of space.

Such a large building is indeed very conspicuous, and it is not difficult to find, passing through the officers' quarters, continuing to walk forward, about ten minutes later, An Yizhi and Apple Tea saw a building connected like a warehouse through the eyes of the devil, and the more important evidence is that the warehouse is not only high, but also the exit door is very huge, obviously not the size of a human use.

But by some surprise, An Yizhi found the disabled officer in front of the storeroom.......

What's the name of this thing?

This product is also tragic, and he was severely burned all over his body by An Yizhi, losing a calf and his entire left arm, and as a result, he didn't even leave the impression of a name......

He was conversing with another man dressed as an officer, who looked and spoke in what appeared to be his subordinate.

Whether it's peeping at the magic eye or the arcane eye, they only have sight and no hearing, and An Yizhi doesn't know how to read lips, otherwise he can study what they say.

The Mystic Eye was hiding in the shadows nearby, and Ann Yizhi planned to wait for them to pass before letting the Peeping Eye enter the hangar to make sure.

But just then, the disabled mage turned his head to look in the direction of the Eye Peeping!

The mages are very sensitive to the peeping of the line of sight, especially if the other party says that there is level 40 or above, this is not John's weak chicken, and must be treated with caution.

An Yiyi turned his finger to the position of the peeping eye, trying to avoid looking directly at it, the translucent peeping eye hid in the deepest darkness under the torch, unless it was approached and touched, it was almost impossible to detect with the naked eye.

Fortunately, the other party just looked in the direction of the peeping magic eye, and then turned his head in the confusion of his subordinates and continued to tell something, but did not find the peeping magic eye.

An Yizhi breathed a sigh of relief, waved his hand to dissolve the peeping magic eye, although he didn't enter the hangar to see for sure, but now the information obtained is enough.