If the production capacity cannot be increased, it means that the cost cannot be reduced, which leads to the inability to large-scale armed forces.

So overall, although the demon army has produced a lot of alchemy firearms, it can only give a small amount of equipment to the relatively elite troops, and it is difficult to compete with Emperor Shi Tian’s weapons and equipment for the time being.

However, for the evil gods, these difficulties can be overcome. Anyway, they need materials and people. As long as they keep developing, they will have a chance to catch up and even surpass Emperor Shi Tian.

Therefore, the evil gods did not give up because of this. Instead, they increased their research efforts and mobilized a large number of demon alchemists, requiring them to increase the output of alchemy weapons.

Of course, this is definitely not something that can be done overnight. Anyway, the front line can still stand for a while, so the demons and evil gods are not particularly anxious.

However, the more than 200 demons and evil gods on Emperor Shi Tian’s side are not so leisurely.

Because of their poor attack, they were severely scolded by the superiors, and the evil god above had already given a death order. If they could not kill Emperor Shi Tian quickly and then quickly support them, they would chop their heads all over the place.

Faced with the pressure of losing his head, the demons and evil gods suddenly became anxious and began to increase their attack. Not only did the elite demon troops of the direct line participate in the battle in large numbers, but even the Legion of Gods began to tentatively join the attack on the scale of a small team.

In fact, using the Legion of God in this way is a total waste.

The reason why the legion of God is powerful is that after they gather together, they can connect magic powers to form a whole, thereby releasing unprecedented powerful power, so that they can compete with demigods and even god-level powerful people.

And if they are divided into small teams, they are at most legendary levels.

But in such a chaotic battlefield, what is legend?

The most important thing is that the Legion of Gods is really too attractive to hatred. As long as they dare to appear in the front, they will definitely be treated the warmest. The legends and even sage spells on the magic tower are basically specially prepared for them.

In this case, as long as the Legion of God dares to show up, they will definitely suffer heavy losses.

After suffering several losses, the demons and evil gods learned their lessons and dared not let the Legion of Gods appear blatantly, and they all pretended.

But even so, the losses of the Legion of Gods have not dropped much.

The reason is also very simple. Although the appearance of the Legion of God can be disguised, its lethality cannot be disguised.

Wherever these juniors pass, they will basically cause a large number of casualties, and even the occasionally legendary masters cannot stop them.

In this case, the team of the Legion of Gods will naturally appear extremely eye-catching and will definitely suffer a key blow.

After several days of fierce attacks, the demons and evil gods could not afford it.

First of all, it is a blood sacrifice. Every time it is a million level, and a legendary master has to be sacrificed. There are several groups of people every day, and no one can stand it if it is replaced.

The second is the Legion of God. Even though they have put on makeup and are under key protection, they still suffer serious losses. Basically, everyone has lost dozens of squads, which adds up to hundreds of Legion of Gods!

In the end, the effect was not too much. Although the periphery of some fortresses was destroyed and even caused relatively large casualties to Emperor Shi Tian’s defenders, compared to the price they paid, this result was simply nothing like that.

After several consecutive days of war, after the demons and evil gods suffered heavy losses, they only captured a few castles, which was obviously too unprofitable.

In this case, the evil gods had to sit together and start thinking about new evil ways.

In fact, the best way now is to attack slowly. Unfortunately, the superiors are forced to force themselves, so they can only bite the bullet and attack hard.

But these guys didn't want to bear too much casualties, so they fell into a very difficult situation.

However, it has to be said that there are also smart people among the evil gods, especially after more than 200 evil gods gathered together, they gave up their prejudices and malice for the first time and began to cooperate sincerely, and they really thought of a series of solutions.

The first one is to dig tunnels. Although the land in the semi-metal plane is extremely hard and the strong gravity also makes the ground particularly dense, making it difficult to dig.

But this kind of thing cannot prevent the evil gods. They began to look for troops outside the abyss who were good at digging holes, and finally found a lot.

However, after these troops came here, they were generally unacceptable to the local conditions, and most of them lost their combat capabilities due to gravity problems.

But in the end, the demons and evil gods chose several big guys who could make holes in the semi-metal plane.

So, these troops were summoned by the evil gods and relying on the large demon summoning gate, they arrived at the semi-metal plane not long after.

Then these guys began to dig tunnels secretly. Because of their sufficient troops, they basically dig dozens or even hundreds of tunnels together.

It’s true that at least Emperor Shi Tian and others did not consider authentic things at the beginning. After all, the ground in this ghost place is too hard to be excavated.

So this time the demon army's secret move was really beyond the expectations of Emperor Shi Tian and others, and he caught him off guard.

When a large number of demons gushed out from hundreds of gaps underground, the powerful protection ability of the Battle Fort also began to fail.

Fortunately, Shi Tiandi's Battle Fort also built a large number of passages and warehouses underground, and they were divided into several floors.

Originally these authentic tunnels were the channels for Emperor Shi Tian to stay and fight back, but now they have become life-saving things.

The demon troops attacking from below basically appeared at the bottom of the battle fortress, destroying a large amount of logistics supplies, and also alarming the defenders above, and then they were blocked at various narrow intersections.

Although in the end, the underground army successfully killed and cooperated with the ground attack troops to successfully capture the entire battle fortress.

However, during their blockade, the defenders in the fort also got some breathing time, evacuating those who should evacuate, and those who should stay behind.

They also detonated some underground arsenals, causing significant damage to the attacking demons.

In short, although the Battle Fort was eventually lost, most of the personnel were able to escape successfully. The personnel losses were not serious, but the material losses were particularly terrible.

Fortunately, these supplies are all near the arsenal, so they are easily detonated and have not been seized by the demon army.

If the demon army really had a huge amount of arms, then the battle fortress on Emperor Shi Tian would be in danger.

However, the evil gods also made a small mistake here, that is, they were a little unconfident in their tactics, so the first wave of underground sneak attacks did not push them all, but instead tentatively selected more than 200 battle forts, each responsible for attacking one.

As a result, only a dozen of these battle castles were lucky enough to defend them, and all the rest fell.

However, after the fall, the fighting style of the demons and evil gods was exposed. Emperor Shi Tian quickly came up with a countermeasure and directly started to build an early warning array.

So, when the extremely excited army of demons used the same trick again, they had no chance to suddenly appear in the battle fortress.

Because during the underground excavation, they were discovered by the exploration array of Emperor Shi Tian, ​​and then prepared troops to ambush in advance.

As a result, these demon troops were immediately baptized by artillery fire as soon as they emerged and suffered heavy losses immediately.

And that's not all. After knocking down the demon that emerged, Emperor Shi Tian's troops poured a large amount of liquid fuel into it, using wind-type spells to blow it all over the ground, and then gently ignited it with open flame.

Boom, with the explosions, the demons in the tunnel were basically completely wiped out.

Relying on this method, the defenders of the Fort finally easily defended the opponent's attack.

However, this little loss is not enough to curb the attack of the Demon Legion.

After they dropped the tunnel corpse, they immediately sent more demons to attack from below.

This time, there may be dozens or hundreds of main roads, but after entering, they dug countless branches and created countless breakthroughs.

All of a sudden, Emperor Shi Tian's defenders felt a little too busy.

After the entire battle fortress was underground, there were tunnels everywhere and the exits of demons excavated everywhere, the battle fortress became difficult to defend.

Even if the defenders tried hard to block the holes and even used fire spells to melt the metal and pour it, it was still useless.

After all, the number of demons is dozens or even hundreds of times that of the defenders. If the two sides compete for engineering capabilities, they are not at the same level at all.

Therefore, relying on the method of digging tunnels, although the demon army still suffered heavy losses, it finally had the opportunity to break through the battle fortress, and it really succeeded a lot.

Of course, this kind of success not only consumes a lot of troops, but also consumes a lot of time.

The solid ground of the semi-metal plane is not so easy to dig. It is even more of a huge project to hollow out the entire War Fort's underground.

Even if there are special troops and a large number, it still takes several months.

If there is this time, Emperor Shi Tian will be enough to rebuild a new battle fort behind.

So from this perspective, it basically means that the Demon Legion broke a battle fort, and Emperor Shi Tian rebuilt a battle fort, one plus and one subtraction, which is equivalent to no loss of the battle fort, and at most it is just a little land lost.
Chapter completed!