Suddenly, the demon's head of the metal coffin opened its mouth violently, and black metal chains stretched out from it, like tentacles, with lightning speed, binding several nearby sub-demons, and then forcibly pulling them into their mouths.

Then, the metal demon's mouth began to chew, accompanied by a terrible scream and the sound of bones shattering, and it was obvious that the sub-demons who had been eaten did not end well.

This scene happened relatively far away, and the humans on the city walls were busy dealing with the demons below, fighting fiercely, and they didn't pay attention to what was happening so far away.

Only Emperor Shi Tian knew from the beginning that the other party's onslaught was just a temptation, and there would definitely be a big move waiting for him, so he had been using spells to observe the situation outside the battle line.

And these cannibalistic metal coffins are also a strange thing, so they immediately attracted the attention of Emperor Shitian.

Just by a glance, Emperor Shi Tian decided that this eighty percent was a weapon, although he didn't know the principle of attack and the way of attack, but it needed to consume a bronze level sub-demon to open it, which showed that this thing was absolutely powerful.

Without any hesitation, Emperor Shi immediately used his authority to activate the large protective arrays in the corresponding three directions.

You must know that as a defensive wall built by Emperor Shi Tian himself, the protective ability is naturally very terrifying, and it is divided into several levels.

First of all, there is a small protective array on the city wall, which is only a few tens of meters in radius after opening, and the protection strength is silver-level, mainly used to protect alchemy artillery, etc., high-level units.

If the enemy's long-range firepower is not sufficient, as long as the main personnel are concentrated in the range of these protective arrays, it can effectively play a protective role.

The second is a large protective array, which often has a protection range of hundreds of kilometers, and the defense strength can also reach the golden level.

Finally, there are mobile protection units, that is, the mage regiment under Emperor Shakti, your enemy's firepower is too fierce, they can also join temporarily, thus greatly enhancing the protection.

The small defensive array is controlled by the middle-level commander of the front line, and it can be released by himself without the order of Emperor Shitian.

And all the large-scale protective arrays are controlled by Emperor Shi Tian himself, and they are opened according to the situation.

The reason for this is really because the larger the protective array, the more magic crystals will be consumed.

And in this barren middle demon plane, the magic crystal is obviously an extremely precious material, even if Emperor Shi Tian takes out his own private collection, there is not much at all, so he naturally wants to use it as sparingly as possible.

If it weren't for the vigilance of those metal coffins, Emperor Shi Tian would not be willing to open the large protective array that stretched for more than ten kilometers in those three directions.

And the facts have proved that Emperor Shi Tian's choice this time is obviously extremely wise and correct.

I saw that after those metal coffins had swallowed the sub-demons, they suddenly opened their big mouths and shot out three terrifying white lights in a row.

Emperor Shi Tian observed through the eye of magic, and he could see clearly that inside the white light was a white bone spear the thickness of a watermelon, seven or eight meters long, which not only had a lot of strange runes on it, but also mixed with black-red flames and the power of a terrible curse.

Hundreds of metal coffins were launched at the same time, and hundreds of streamers were seen in an instant, continuously bombarding the large protective array, and then exploding violently.

Not only did this thing explode countless tiny fragments of white bones, but it also left behind a black cloud of smoke, clearly poisonous gas containing the power of the curse.

Taken together, the power of each white bone spear has reached the level of the silver peak, and the three strikes are shot together, and the damage at the landing point can even barely reach the gold level.

Fortunately, Emperor Shi Tian opened a large protective array in advance, and although it was blown up everywhere, the transparent magic shield persevered tenaciously and protected the people on the city wall very well.

According to the calculation of the power of the explosion of these white bone spears, if there is no large protective array to resist, they can definitely penetrate the small protective array on the city's head, and then smash everything on the city's head, whether you are a person or a city defense machine, it is almost impossible to preserve it completely.

It can be said that Emperor Shi Tian's decision saved at least thousands of lives, and the most important thing is that hundreds of short-barreled alchemy cannons were saved.

However, Emperor Shi Tian did not have any intention of being happy, but instead frowned deeper.

Don't look at the surprise attack launched by the other party that consumed hundreds of sub-demons, it was resolved by Emperor Shi Tian, but in fact, the comparison of losses between the two sides is not necessarily that Emperor Shi Tian has the upper hand.

Because the large protective array activated by Emperor Shi Tian needs to consume precious magic crystals, and the demon army only consumes some worthless cannon fodder, at least from this point of view, it is definitely Emperor Shi Tian who suffers a big loss.

But Emperor Shi Tian obviously can't help but activate the protective array, and he can't watch his soldiers and city defense equipment being blown up, right?

At this time, the demon dwarves began to search for cannon fodder, especially the sub-demons, to prepare those metal coffins as food or cannonballs.

When Emperor Shi Tian saw this posture, he immediately stomped his feet angrily and scolded: "This little damn bastard is not over yet!

After speaking, Emperor Shi Tian gritted his teeth and gave an order.

In a short time, dozens of brilliant white lights suddenly shot out from the ten towers, destroying dozens of metal coffins on the spot like sharp swords.

Although these metal coffins also follow the path of rough skin and thick flesh, there is no way to wait for idle attacks.

However, Emperor Shi Tian also let go this time, and directly dispatched the magic crystal cannon, the gold-level pillar of light, wrapped in terrifying heat, directly melted the metal coffin into a big hole, and even the demon's head was pierced.

In this case, no matter how strong these metal coffins are, I am afraid that there is no way to continue to attack.

Despite the great victory, Emperor Ke Shi was still a little worried, because the blow just now consumed hundreds of kilograms of magic crystals, and the loss was also not heavy.

In fact, Emperor Shi Tian could see that the other party just wanted to exchange cannon fodder for his magic crystal, and once the magic crystal was consumed, not only would the large-scale protective formation not be activated, but even the magic crystal cannon would lose energy, and there would be no way to threaten the gold-level great demon anymore.

At that time, without the direct threat of the Demon Crystal Cannon, the Great Demon of the Demon Legion may be able to dare to rush to the city to kill unscrupulously, and if he can't fight, he can retreat calmly, but as long as he kills dozens of them, he will earn it.

Emperor Shi Tian thought about it a lot, and he was very far behind, anyway, he deeply felt the difficulty of the legendary demon Zagulang on the other side.

At the same time, the legendary demon Zagulang is also a little depressed.

The metal coffin he sent out was called the Demon Head Heavy Crossbow, which was a special siege weapon made by the demon dwarves, and its biggest feature was that it consumed cheap cannon fodder to hit a silver-level attack.

For the Demon Legion, the value of cannon fodder is simply not worth mentioning, and if they can be exchanged for such a powerful spell attack, it is definitely a big profit.

Therefore, the use of cheap and powerful has become the label of this alchemical weapon, which is deeply loved by the demon army.

The legendary demon Zagulang sent this thing to carry out a sneak attack as soon as he came up this time, the purpose of which was to knock out the short-barreled alchemy cannon on the city's head, so as to create a good opportunity for his siege troops.

Originally, Zagulang thought very well, he knew that the archangel Rafi was more stingy and greedy for money, and he felt that he would not be willing to waste a large amount of magic crystals in the first place.

Therefore, the other party is likely to respond by exchanging cannon fodder for cannon fodder, after all, the other party, as the defending side, has taken a big advantage, and the battle loss ratio of the two sides is dozens to one, which is worth it for the angel side.

However, the legendary demon Zagulang made a lot of calculations, and the commander who didn't count this time was not the archangel Rafi, but the Emperor Shitian.

The other party not only stopped his sneak attack at the first time, but also defeated his demon head heavy crossbow with great decisiveness.

Although a lot of magic crystals were consumed, it kept the things on the front line and the alchemy artillery, and caused great losses to the demon legion, after all, the demon head heavy crossbow is not a cabbage, and it is not something that you want.

In fact, all the Demon Head Heavy Crossbows in the hands of the legendary demon Zagulang added up to a few hundred, and this time it lost about 1/4.

The rest of the demon head heavy crossbow, Zagu Lang was reluctant to send it to the front line in vain, the commander on the opposite side was too decisive, and he didn't hesitate at all, and knocked out these demon head heavy crossbows, it can be seen that how much more is sent is to deliver food, and the guy on the opposite side will never show mercy.

In this case, the legendary demon Zagulang simply stopped playing conspiracy, but instead used a dignified and upright conspiracy to forcibly push with force.

So, under the order of the legendary demon Zagulang, the cannon fodder troops in the demon army continued to launch fierce attacks in those three directions.

Every time you invest 10,000 people, when you die, you will invest another 10,000, and there will inevitably be little demons who are good at long-range attacks, so that they will constantly consume the energy of the magic array on the opposite side.

The reason why these three directions were chosen is because the terrain here is flat, suitable for large army movements, and the other directions are a bit hilly, and now they are simply cliffs, which are not easy to attack.

As for the purpose of the legendary demon Zagulang, it is to consume magic crystals, whether it is a large protective array or a small protective array, it must rely on magic crystals to promote.

In order to achieve this goal, the legendary demon Zagulang also urgently asked the demon dwarves to make some broken siege weapons, catapults, and heavy crossbows, it doesn't matter if the power is strong or not, as long as it can hit the head.

Because these attacks will also consume the power of the magic array.

And high-level siege weapons, although powerful, are also prone to attract powerful counterattacks, resulting in losses.

But improvised cannon fodder weapons don't matter, even if they are shattered by alchemy cannons, they can be remade, anyway, all that is consumed is some ubiquitous materials and the time of demon dwarves.

(End of chapter)