Ciri waited for a whole day and a night, and nothing major had changed in the [Fortress] at all, except for the slight increase in the brightness of the four-series Shadow Demon Stone Ball. The small pieces of the Shadow Demon Stone have been constantly arranging and reorganizing. Ciri was a little skeptical that the [Fortress] was broken, and it stands to reason that even a level 9 full range of composite magic wouldn't take so much time to prepare.

However, if something goes wrong with the fortress, its own feedback module will definitely report the situation to Ciri. Now [Bastion] is not making an error report, which means that it is working properly. Ciri finally chose to believe in [Fortress] and consoled himself that the longer he prepared, the more powerful the spell would be, and the more likely it would be to take effect.

On the fourth day of the academy promotion battle, the [Fortress] finally changed.

The speed at which the entire [Energy Supply Module] extracts energy from energy stones suddenly increases, and the mountains of energy stones that have been piled up become dim little by little. Above the energy barrier on the side of the Mangrove Academy, a super-large rune circle began to slowly emerge. This circle was much more complex than the rune circle that ordinary spells manifested, and the dense runes were all over the inner campus of Mangrove Academy.

Then some magic circle runes began to appear on the ground of the entire inner campus, and the [Doomsday Dusk] spell was able to ignore the energy barrier and directly spread the influence inside the energy barrier, which made the heads of the departments who had not discussed any solution suddenly interested.

They stood outside the energy barrier, observing through the transparent energy barrier the runic circles that constantly appeared inside it. [Doomsday Twilight] hadn't been cast yet, and the magical sight it displayed made the others wonder: Could it be that this strange-shaped magic item can really release a spell that breaks the opponent's energy barrier?

Ciri himself has never seen the effects of [Doom Twilight]'s spells, and the books that record them do not mention its effects or specific powers. However, for the sake of safety, he asked the heads of each department to direct their members to move backwards for a certain distance to prevent accidental damage from the power of the spell.

On the side of the Mangrove Magic Academy inside the energy barrier, although they could also see the rune arrays gradually appearing on the ground and in mid-air, they had no way to affect those runes, so they could only order personal protection to meet the upcoming attack.

As the image of the magic circle was gradually completed, the concentration of magic elements in the space was also increasing, and the magic elements around it were frantically gathering towards the energy barrier area, and soon exceeded the maximum level that ordinary level 9 spells could achieve.

At noon on the fourth day, the clear sky gradually became dark, and the brightness of the light in the area of [Doomsday Twilight] began to decrease, and a depressing and dreary atmosphere arose. Dark red clouds began to gradually form in the energy barrier air, slowly filling the entire space. When the number of clouds reaches a certain level, some red fine lightning starts to appear between the clouds.

The energy barrier was supposed to be able to completely isolate elemental energy from entering and exiting before it was broken. But at this time, the concentration of elements inside the energy barrier was rising for some reason, as if there was elemental energy constantly seeping into the entire space.

Many of the members of the Flower Academy were idle, gathering outside a certain range of the energy barrier to observe the changes taking place in its internal and external spaces. There were also many academic mages who went to the place where the [fortress] was located to see what was the source of this strange phenomenon.

At the location of the [Fortress], the other academic mages only saw the large [Energy Supply Module] magic circle carved into the ground, the mountain of energy stones in the center of the circle that was constantly dimming, and the [Fortress] body that was rapidly moving like a black mist around it.

Ciri was afraid of trouble, so he hid and waited for the results of the spell. The magic circle on the ground is just an enlarged and improved version of the [Energy Supply Module], the magic that reveals various visions, and its source is five shadow magic stone spheres floating around. No one dared to influence the operation of the [fortress], so these mages who came over could only stare dryly, and could not get any useful information.

As time passed, more and more visions were created by the [Doomsday Twilight] spell. The four basic magic elements of earth, water, wind, and fire, and the six composite magic elements of thunder, ice, wood, burn, flame, and sand formed by their combination in pairs, gathered more and more in the area where the energy barrier was located.

Dense red lightning continued to grow and die among the dark red clouds in the sky, and a faint rumble of thunder rumbled. The magic elements in the energy barrier area are not only extremely concentrated, but also very active.

The high level of activity means that it is extremely unstable, and the mages of the Mangrove Magic Academy who are unstable do not dare to use it at all, otherwise they may cause some chain disasters if they are not careful, and they can only try to isolate themselves from the connection with the outside magic elements.

At this time, the leaders of the third layer of the space world of the Mangrove Academy were also in trouble, looking at the signs of terror outside, the side of the Flower Academy was obviously casting a very powerful spell, and if they stayed inside the energy barrier, they were a living target that could only wait for the trial.

They can remove the energy barrier and escape from the area of this terrifying magic, and everyone is not willing. Once they leave the protection of the energy barrier, according to the previous battle between the two sides, there is basically only one ending.

In the end, the Mangrove Academy chose to wait, they chose to bet that although this kind of anomalous magic looked terrifying, it did not exceed the scope of level 9 magic and could not break through the energy barrier defense, or bet that at the end of the fifth day, this spell could not be completely completed, and they could hold on until the end of the battle time.

The fifth day of the battle for the academy promotion is also the last day of this battle. If the Flower Academy still can't break through the mangrove academy's energy barrier on this day, the two sides will be judged to be a draw, and no one will get points.

In the eyes of the weak side of Mangrove College, this is very satisfying, but Fanhua College, as the dominant party, does not want to get this kind of ending.

The originally dark red clouds in the sky had turned a rich purple-black, and the light in the entire energy barrier area was much dimmer. Even in the daytime, it was a very dim scene.

The small red lightning bolts between the purple-black clouds turned into large black chain lightning, and from time to time some red-black slime-like liquid drippeds from the clouds onto the energy barrier and the surrounding ground. Although this liquid failed to break through the defenses of the energy barrier, it was extremely corrosive from the scene where it dripped on the ground.

The earth elements in the air inside the energy barrier have become so dense and active that they condense many small dusty particles in the air. There was no longer a shadow of the mage on the streets of the inner campus, and all the mages of the Mangrove Magic Academy returned to the interior of the various campus buildings, opened the defensive circles attached to the buildings themselves, and waited for them.