And the most important thing is that the 500 heavy cannons are not just one wave, and soon, the second and third waves fell again, and in a series of roars, this onslaught of the demon army directly collapsed.

The original continuous attack, but as a result, a blank appeared in the middle, causing the demons who attacked the city wall to have no reinforcements, and they were quickly killed by the Titan warriors.

The follow-up troops, under the constraints of the demon generals, stopped advancing early, and watched the soldiers in front of them being slaughtered one by one.

Even if there is no affection between the demons, but seeing such a bleak fate for their kind, those demons also feel the same and are filled with righteous indignation.

But in any case, in the face of a continuous onslaught of 500 guns and 250 mm heavy guns, the crowd tactics have basically lost their meaning.

After only three waves of artillery bombardment, the battlefield was full of craters and all sorts of negative spells, toxins, curses, and blazing flames, all of which became obstacles to progress.

At this time, if you attack further, in addition to paying huge casualties, it will definitely not have any effect, at most it will be a waste of a little flaw.

Although the demon army is fierce, it doesn't mean that they are all idiots, and they will naturally not do such a thankless thing.

It is precisely because of this that the generals in command at the front wisely decided to stop the offensive.

And after the demons on this side stopped attacking, the crisis situation was also resolved.

Emperor Shi Tian then commanded these alchemy heavy cannons and began to bombard them in other directions, bombarding them wherever there were large areas of dense demons.

Although heavy artillery does not have too high accuracy, and it is difficult to cause any damage to a single strong man at a very long distance, if it is formed and carpet shelling is achieved, then it can cause heavy damage to the dense sea of people.

And at this time, the second wave of alchemy cannons also teleported, also a thousand.

Emperor Shakti immediately accepted their command, instructed them to set up positions in another direction, and then immediately joined in the artillery bombardment.

I have to say that the castle is too big, and there is also a disadvantage, that is, there are many more directions for the opponent's attack.

For example, in this giant castle with a radius of dozens of kilometers, there are demons attacking in almost all directions, and even if Emperor Shi Tian knocks out a few places, it will be difficult to affect the overall situation.

However, fortunately, Emperor Shitian's reinforcements were endless, and the four consecutive teleportations were alchemy heavy artillery, a total of 2,000 heavy cannons, which were arranged in the four directions of the teleportation array, and then kept providing support to the surrounding city walls.

Maybe 500 heavy artillery cannons can't stop the demon army of millions in all directions.

But when the number of heavy artillery reached 2,000, the quantitative change produced a qualitative change, and the terrifying impact of the demon army was finally greatly alleviated.

As long as 500 heavy cannons and three consecutive salvos can break up a sharp attack of the demon legion.

The flower fairies who control the cannons are specially trained, and can not only use the Mighty Magic Vine to quickly reload the cannonballs, but also use the Ice Magic Vine to cool the cannon barrel.

In this way, the sustainability of the alchemy cannon is greatly improved.

Under normal circumstances, an alchemy cannon fired at full speed may fire several dozen or 20 rounds in a row, and it will be forced to stop because the barrel is overheated, otherwise it may explode.

But with Ice Magic's cooldown, even if you fire hundreds of shells in a row, there will be no problem.

In this case, the 2,000 Temple Army artillery roared incessantly, smashing the 300-kilogram giant cannonball into the densest place of the demon legion, almost every time it could cause a large number of casualties.

After a few minutes of continuous bombardment, the main offensive directions of the Demon Legion were basically taken care of, not to mention the heavy losses, and the road ahead was still paved with various negative spells, making it difficult to continue to advance.

At this point, this giant castle in danger has finally settled down.

Although the Demon Legion was unwilling to fail and re-selected several main attack directions, it still failed to rush under the city wall and was scattered by the overwhelming heavy artillery.

After several experiments, apart from the loss of troops, the demon legion did not reap any results, and it was even difficult to get close to the city wall.

After a few lessons, the other party finally knew that there was nothing to do, so he could only stop the attack temporarily.

At this time, Scott and the others felt as if they were in a dream.

In the face of the frantic attack of millions of demon armies, Scott and the others have reached the end of their crossbows, and they are about to be unable to support them.

As a result, after Emperor Shi Tian came, he bombarded violently, and directly turned the danger into a disaster, not only causing major damage to the other party, but also his own losses were even few, and Emperor Shi Tian simply had almost no losses.

Because Emperor Shitian's troops were far away from the battlefield from beginning to end, with a distance of dozens of miles, it was difficult to get injured.

After seeing such a miracle, Scott and the others were finally convinced, and they were indeed worthy of fame.

Emperor Shi Tian, as a monster who stirred up the Heavenly God Academy, even the tutor who embarrassed him was killed by him, and he really didn't blow it, he was indeed very capable.

You know, Scott and they have six castles trapped, and although Emperor Shi Tian came to this main castle, it doesn't mean that his troops have not gone to other sub-castles.

In fact, since this place is rich in Void Stones for the construction of teleportation arrays, the teleportation arrays built in the six castles are extravagant, not only to support each other, but also to get reinforcements from the rear at the same time.

Emperor Shi Tian came over this time, naturally not just to rescue a castle.

In fact, when Emperor Shi Tian commanded the battle here, a large number of alchemy cannons also appeared in the other five castles, but the number was slightly smaller, with 1,500 each.

The main reason is that those castles are a little smaller, and they are considered satellite cities, and their importance is far less than that of the main city, and the attack is much smaller.

Therefore, even though there were only 1,500 alchemy cannons on the side, they also repelled the demon's attack.

As the roaring artillery fire on the battlefield gradually disappeared, the tens of millions of demon armies besieging the six castles finally suspended their ferocious attacks and began to plan a new conspiracy.

Scott and the others naturally breathed a sigh of relief, and then with a feeling of worship, they visited Emperor Shi Tian again.

"My lord, you are truly the strongest genius in the history of the Heavenly God Academy, how amazing!" Scott praised from the bottom of his heart.

"yes, it's so powerful to crush these damn demons with just a few alchemy cannons. ”

"I just don't know if these guns are sold, we really want to buy some!"

"Yes, yes, if it's convenient for adults, they still want to share a little bit of us, and we promise to pay a high price, and we will never let people suffer. ”

Obviously, the artillery performance just now was so amazing that they all moved these students and went back to play with some of them.

Emperor Shi Tian actually hoped that he could sell these old weapons, but out of the credibility of the arms dealer, Emperor Shi Tian did not directly agree, but kindly reminded: "This kind of alchemy cannon can be sold to you, but you have to think about it carefully, the cost of shells is not low!"

Hearing Emperor Shi Tian say this, everyone immediately became alert.

Scott hurriedly asked, "How much are these shells worth?"

"The shells weigh up to 300 kilograms, about 1/10 of which are magic metal, and the type and quantity vary depending on the spell sealed, but it's pretty much the same. Emperor Shi Tian shrugged his shoulders a little helplessly and said, "Now you should have a few points in your heart, right?"

"Silk~" After hearing this, one of them was counted as one, and they all gasped.

For the Titan Protoss, who were also good at alchemy, steel was nothing at all, it was easy to refine, and there were many of them.

But what the hell is magic metal? They can only mine ready-made magic metal mines, and they don't have that many dwarven slaves to help them work.

In fact, not all dwarves have the ability to forge magical metal, and they must have a corresponding inheritance.

So for Scott, magic metal is a relatively rare resource.

And if a shell consumes 1/10, that is, 30 kilograms, then a salvo of 500 cannons, isn't it equivalent to throwing 15,000 kilograms in vain, that is, a full 15 tons of magic metal?

Just 15 tons of magic metal is not a small number for an elite student like Scott.

Emperor Shi Tian is good, the salvo of 500 cannons, for half an hour in a row, how much magic metal will Tianzhi have to hit.

Anyway, just thinking about that horrific number was enough to make Scott and them despair.

In addition, it is worth mentioning that this is only the cost of materials, for alchemy items, its value has always been half-work, and the amount of materials spent, the processing cost will be spent.

From this, you can see how great the value of so many shells is.

Anyway, the tens of thousands of shells that the Guangshi Heavenly Emperor had just fired were worth an astonishingly high amount on the market.

Scott then smiled wryly: "This is too expensive!"

"There's no way, if you want to have a good effect, and you want to save money, how can there be such a cheap thing?" Emperor Shi Tian shrugged indifferently and said, "But for you, you have a lot of money, you should be able to afford it, right?"

"This?" said Scott, frowning, "I can buy it, but I can't afford it, unless you tell us how to make the shells, and let us produce it ourselves." ”

"Well~" Emperor Shi touched his chin and said, "If you purchase a thousand cannons, I can give you three shell manufacturing techniques." ”

"Really?" said Scott and his classmates.

There's no way, the power shown by these heavy artillery pieces is too terrifying, whether it is direct killing firepower or all kinds of negative states, they are very restrained by the demon's human cannon fodder tactics, and they are really unconvinced.

(End of chapter)