Inside the dark cavern, the walls were covered with crystal lights, and a two-man wide railroad track stretched out of it. ~with~dream~small~say~щ~suimеng~lā

There are four caves leading from the outside to the interior, and the complex and interconnected passages within them are chilling.

Emiya only walked in for a short time before he felt that he could not breathe, and the smell of stone chips and dust filled the air, especially in some of the hard places of the rock face, and he could only barely chisel a hole for diminutive miners and even underage children to climb into.

The air quality inside is exceptionally poor, which is why miners are susceptible to silicosis, and thousands of miners die every year due to accidental landslides or train ziplines breaking, or falling into the depths of the mine and explosions caused by excessive methane accumulation.

Yan Guan had also explored before, and originally thought that if he couldn't hold it, he could hide in the mine, because of its complex terrain, and it was easy to get lost if people who were not familiar with it went in.

But when I actually went inside, I realized that this is really not a place for people.

If you hide in a mine, it is tantamount to digging your own grave.

The buried person is still happy, and it is over by sealing the hole directly.

After reading a paragraph, Wei Gong frowned and withdrew.

If he hadn't really seen it, he wouldn't have known how hard-won the sword-forging materials he used on weekdays were, and if he could, Wei Gong hoped to discuss with Cui Xiaoxiao how to automate the mining and replace them with robots, which would be safer.

However, it is also possible that this is just wishful thinking, after all, these people in power do not necessarily agree.

……

Once the ore is transported out of the mine, it is transported and sorted to several different warehouses.

Jinyu excellent products below all throw one, and then go to the top, Baihua best and Jade Dragon Emperor each pack one, Jade Dragon Emperor products, the largest output will be divided into three exclusive warehouses, and then up because the output is scarce, so they are all packed in a warehouse.

Even many low-level rough stones, if they were not transported away in time, were directly piled on the ground and became a mountain of rough stones.

This phenomenon abounds in huge mines.

The only difference is that when rare rough stones with a relatively high purity above the immortal grade are mined, they will be stacked and locked in the last warehouse.

And only the person in charge of the entire mine has the key to open.

With a "bell", Wei Gong slashed open the door of the warehouse with a sword without the slightest hesitation.

"Oh my God!"

Although the materials above the immortal grade should have been transported away as soon as possible, because of the sudden attack of Beisha today, there was still a day's mining volume left inside.

Immortal and god-grade rough stones were piled up in a small corner, and the rough estimate should be worth more than fifty million.

It is worthy of being the first of the world's four major material sources.

Seeing so many high-grade rough stones, Emiya's eyes lit up, and he had the urge to take them back at all costs.

"Please restrain yourself." Liang Mingfeng next to him reminded.

……

If you want to arm your team quickly, you won't have that much time to build high-grade swords for them in a short period of time.

Emiya rummaged inside for a long time and didn't find what he was looking for-

Seven obsidian.

It is used to synthesize the Celestial Source Stone, which can transform an attribute conversion sword for each person in a short period of time.

Linked to the core composition of the Qiankun Mirror that he had studied before, Wei Gong had an ominous premonition in his heart.

"Wu Jian, why can't you even find a single obsidian here?"

"Huh...... I didn't really notice it, but I couldn't find any obsidian here. Wu Jian groped his chin, and it seemed that he really didn't know, "Usually we are only responsible for mining and transporting them to the warehouse, and as for the materials above the immortal grade, they are all in charge of special personnel, and we really haven't paid attention to what we have moved and where they have gone." ”

Although there were some regrets, Wu Jian's answer was also expected by Wei Gong.

The previous thing about the Heavenly Sword Kingdom's control of the Seven Obsidian should be true.

In view of the time constraints, Emiya could only put this matter aside for the time being.

……

Under the leadership of Wu Jian, the group came to the guard tower near the top of the mountain.

Alert towers, also known as mushrooms.

Because their shape is a mushroom-shaped tower with a round and large top, thick and hard bottom, standing upright on the ground.

In order to prevent enemy attacks and to serve as effective outer ramparts, their upper ends were built in a hemispherical shape, and a horizontal circular window was opened from the height of the human head.

Sword Immortals' attacks can come from any direction, so in order to effectively reduce the impact surface, the person in the guard tower will almost only expose the position of the head.

The towers themselves had to be made of very tough alloys, otherwise they would be difficult to defend.

Of course, this is only for those below the Ninefold Realm.

Masters above the Ninefold Realm still didn't run away with a sword against these mushrooms.

Therefore, generally in the Sword Immortal World, in order to minimize casualties, the first to charge is the general.

That's why the generals here are more beloved by the soldiers.

The guard tower standing in front of them now is no longer known how many years ago it was built, a large part of the metal outside has been oxidized, and at the same time, the supporting feet below have also been partially corroded and moth-eaten.

In general, renovation is a must, it is just a matter of whether the time can catch up.

It is estimated that there are not many people who can smelt and cast, and those miners who have a lot of contact with them may be more useful than these soldiers.

Emiya was thinking about how to build a perfect fortification.

Seeing his helpless appearance, Liang Mingfeng couldn't help but be a little worried.

Seeing the confused eyes of several generals, Wu Jian, who knew something about these things, explained it to them.

However, no matter how you look at it, it looks like it's too late to rush to repair.

Yan Guan also fell into deep thought, and agreed to the plan of Xinsha Kailan at that time, mainly looking at the fortifications here, but the terrain and food.

If you use the current fortifications, they still have at least the height advantage of the terrain...

While he was thinking, Emiya's gaze suddenly fell on him.

"General Yan, can you lie down for a while?"

“…… Yes?! Yan Guan was completely confused.

"Or squat down, and then remember to take off the outer cloak."

Yan Guan didn't understand what he was going to do, but because of the strength of the other party, he still obediently did it.

The armor on Yan Guan's body made a clicking sound, and as he crouched down, the scales covering it crossed each other, reflecting a metallic red luster in the moonlight.

Emiya glanced at it, revealing an expression of sudden realization.

"Yes, that's it! King Eight! ”