A large number of bubbles appeared in the magma under the fortress, and the Imperial Army also noticed this change.
Carlos smiled, and the situation was proceeding according to his predetermined plan.
"After waiting for so long, it's finally ready, Anna, let's go."
Carlos didn't know who he was talking to.
"Um."
An illusory girl came, and there seemed to be an invisible woman near Carlos.
After about tens of seconds, the magma with a large number of bubbles under the fortress stopped churning and began to solidify.
Click it, click it.
The condensed magma burst into cracks. These cracks are not messy, but form a chain of large alchemy arrays.
Boom boom boom
The ground in a radius of more than ten kilometers began to shake.
boom!
The solidified magma layer ruptured, and higher temperature magma gushed out from the cracks in the magma layer, and those cracks gushed out magma like fountains.
Gululu
The magma flowed down the slope, and the imperial soldiers who were not far from the magma immediately retreated.
The magma continued to flow up and down the slope. In just a dozen seconds, a tumbling magma slope had formed under the fortress.
Behind the battlefield, Carlos' adjutant stood on a high place and looked at the magma slope. He held a black slate in his arms, and the slate was engraved with a very precise alchemy pattern.
"The height is not enough."
The adjutant's occlusal muscle was protruding, and he could clearly see that the magma flow under the fortress had begun to swallow the imperial army, and the screams were continuous.
"not enough."
Adjutant Rona's eyes were a little fierce. At this moment, a large number of imperial soldiers were being swallowed by magma.
Telling these soldiers in advance can greatly reduce casualties. If you do that, the plan is likely to be exposed, and it will only kill more people.
The screams of the soldiers burned by the magma spread far away. Not to mention the ordinary officers of the empire, even the tribal troops on the fortress were stunned.
"Carlos is crazy!"
Tauren Amster's cheeks twitched. Although he knew some of Carlos' ruthlessness, he didn't expect Carlos to be so ruthless. This was using the lives of soldiers to carry out a plan.
Gululu
The higher the magma surged, the more magma flowed down the slope, and the more casualties the imperial army suffered.
Soon, the tribal army on the fortress felt the scorching heat of the magma, their beard and hair began to burn, and they began to retreat. If the magma flooded into the fortress, they would die.
The tauren Amster did not retreat, because he believed that no matter how crazy Carlos was, he would not let the magma flood into the fortress. After the magma solidified, it would produce hard rock. The stone slope on the side is just to escape down the fortress, and the casualties will not be too great.
If the magma solidifies above the black soil fortress, not to mention the damage to the overall structure of the fortress, it will be a huge project to clean up the rocks in the later stage. At that time, the black soil fortress will be equivalent to a kilometer of waste, and the tribal army will attack again from this weak point .
Just as the tauren Amster had imagined, when the magma surged to be level with the fortress, Rona, the adjutant in the rear of the imperial army, smashed the slate in his hand.
With a bang, the stone slab shattered, and the magma surging under the fortress stopped instantly.
There is a reason why Carlos did not allow the magma to flow up to the fortress. On the one hand, the rocks formed after the magma cooled were difficult to clean. On the other hand, if you want to kill the tribal army on the fortress, you don¡¯t need to let the magma flow up. .
After the magma at the same level as the fortress stopped, the tauren Amster on the fortress was relieved, which was the same as he expected.
"run!"
There was a thinner shout from the side, and the goblin inventor ran towards the other side of the fort with two short legs, jumped to the stone slope built by the tribe on the other side and continued to escape.
At first, goblin inventors believed that the alchemy array in the magma was a 'heat-cold replacement alchemy array', but this is not the case.
Seeing the goblin inventor's reaction, the tauren Amster's hairs stood on end.
"Retreat from the fortress."
While the tauren Amster was roaring, he also ran towards the stone slope on the other side of the fortress, but unfortunately he was a little slower.
The color of the magma that stopped gushing began to change, from fiery red to blue-black, and a layer of ice crystals quickly clinged to the surface of the magma.
Such a large alternation of hot and cold caused the semi-solid magma slope to crack rapidly.
Whoops!
When touched by hot and cold, large sheets of steam rise up. This is not ordinary water vapor, but superheated steam far exceeding the critical point.
Steam filled the air, and tonight was a westerly wind, and a large area of ??steam quickly wrapped the black soil fortress. Tonight was the weather Carlos wanted most.
"ah!!"
Hoarse screams came from the fortress, and four 'dishes' appeared on the fortress, steamed orcs, steamed goblins, steamed dwarves, and steamed trolls.
The 30,000 tribal troops stationed in the fortress screamed in pain in the steam. The terrifyingly hot steam rotted their skin, and even eroded their internal organs once they breathed in.
In just a few seconds, there was a dead silence on the fortress, only a vast expanse of steam, and all the tribal troops on the fortress were dead.
A smell of meat wafted away, and some recruits recruited by the Imperial Army began to retch.
Silent, cruel, terrifying, this is what the Black Soil Fortress looks like now.
"Blood debts are paid with blood. The fortress built by Lao Tzu's ancestors can't be taken away by the tribe."
Carlos said these words word by word, this is Carlos, brave. Iron blood, more ferocious than anyone else at critical moments, only such people can guard the frontier, those so-called heroes cannot keep the tribe out of the fortress, there is no despicable word in war, as long as the enemy can be killed, so what can despicable ? The dead do not call the enemy mean, because they are dead and cannot speak.
The steam lasted for more than four hours before it began to thin, and the sky began to light up.
On the battlefield, Carlos said something to the invisible woman again.
At the same time, Rona, the adjutant in the rear of the Imperial Army, ordered to regroup the troops, and the order was quickly communicated to the entire army.
In just a few minutes, more than 200,000 imperial troops had regrouped. The hesitation in the soldiers' eyes disappeared, and the resolute eyes made people wonder if they were the half-broken scattered soldiers who were desperately pushing back a few hours ago.
Thousands of soldiers carrying large water buckets lined up in a neat line, and ran quickly towards the black soil fortress. When these thousands of soldiers rushed to the solidified magma slope, they untied the thick water buckets half a person's height behind them, and put them on the ground. The water inside pours down on the bottom of the slope.
Chi~
The water vapor rises, and the temperature of the slope after watering gradually drops, and the surface becomes a gray-black honeycomb shape.
When buckets of water were poured on it, the temperature of the magma slope cooled rapidly, and thousands of people gradually pushed upwards to continue watering.
After thousands of barrels of water were poured, the magma slope was still a little hot to the feet, but it was barely bearable.
Boom, boom, boom
The sound of war drums came from the opposite side of the fortress. It was the tribal army gathering. The two sides were separated by the fortress, but there were slopes on both sides of the fortress. One side was formed after the magma cooled, and the other side was the tribal army preparing in advance. Take back the fort. With this slope, it will be much easier for the tribal army to attack the fort.
Although the imperial army did not take back the fortress, they made a slope leading directly to the top of the fortress.
In this way, the black earth fortress is like a mountain, and both sides can easily rush to the fortress. Now it depends on who can beat the other side back