The dark age of mankind is coming

When they arrived at the city wall, An Ning looked up and saw dense groups of mutant beasts appearing in the distance.

They came like a tide, as if to devour everything, and among these mutant beasts there were some that were huge and high-level.

This is the second time that Hope Base has been surrounded by a group of mutant beasts, and the situation this time is more serious than the last time. There are more mutant beasts and they are stronger.

An Ning made a prompt decision and ordered: "Activate the protective formation immediately! We must not let these guys get close to our base!"

Following An Ning's order, everyone acted quickly.

According to the pre-made plan, they threw a large number of crystal cores into the formation around the base.

Immediately afterwards, a mysterious and powerful force was activated, and a circular energy shield slowly rose up, tightly covering the entire base.

This energy shield is no ordinary thing. It is a protective array that An Ning carefully arranged outside the base using the crystal core as the energy core and referring to the formation knowledge learned from the jade slips.

As long as the formation is not damaged, no person or object outside can easily break through this indestructible shield.

However, this shield does not impose any restrictions on the people and objects inside, and they can enter and exit freely.

This is just like the magical safety circle that the Monkey King Sun Wukong once drew for Monk Tang. As long as people do not take the initiative to walk out of the circle, it will be difficult for monsters outside to enter the circle and harm them.

Ever since the last incident of a group of mutant animals raiding the base, An Ning has deeply realized the importance of protective measures.

So she built this defensive formation to protect the base and its residents in times of crisis.

Although this protective formation possesses extremely powerful power, it also consumes enormous amounts of energy.

Therefore, the base will not easily activate it unless absolutely necessary.

However, facing the huge group of mutant beasts in front of him, An Ning made the decision without hesitation.

Now, it's time to test this protective formation!

The mutant beasts launched a ferocious charge. They took huge steps and rushed towards the base like surging waves.

Each mutant beast exudes a heart-pounding aura, as if it wants to tear everything apart.

"Open fire!" An Ning gave an order, and the cannons, machine guns and other weapons on the city wall opened fire at the same time. The dense firepower covered the mutant beasts.

Shells and bullets rained down, forming a barrage of death.

However, the mutant beasts did not stop and continued to charge forward.

Although some low-level mutant beasts were killed directly by the fire attack, those high-level mutant beasts with thick skin and huge bodies only suffered some superficial injuries.

The fur and scales on these mutant beasts seem to have strong defensive power, making it impossible for most bullets and shells to penetrate their bodies.

Only artillery fire with higher attack power can cause serious damage to them, while attacks from other ordinary weapons such as guns have limited effects on them.

As the mutant beasts got closer and closer to the city wall, the soldiers on the wall felt unprecedented pressure.

They constantly adjusted the shooting angle and frequency, trying to stop the attack of the mutant beasts.

But the number of mutant beasts was too large and their speed was very fast, making it difficult for the team members to deal with them.

Soon, the mutant beasts arrived under the protective shield.

The mutant beasts rammed the protective shield frantically, making a deafening noise.

The protective shield flashed with dazzling light and was under tremendous pressure.

An Ning's eyes narrowed and she shouted, "Superpower team, move forward." Her voice was like a thunder, resounding throughout the base.

As the tranquility order was issued, the psychics in the base began to take action.

They leapt onto the defensive wall like arrows, exerting their special abilities to the fullest and releasing powerful force into the mutant beasts outside the base.

For a moment, flames shot up into the sky and smoke filled the air.

The psychics tried their best to resist the attack of the mutant beasts.

Their abilities intertwined to form a solid line of defense.

However, due to the large number of mutant beasts, the psychics gradually felt overwhelmed.

More and more mutant beasts began to attack the shield, and the light on the shield began to flicker, as if it could break at any time. The team members responsible for guarding the shield looked solemn, and they quickly replenished the crystal cores to maintain the stability of the shield.

"How long can the protective shield last?" An Ning frowned, her eyes fixed on the battlefield ahead.

A team member quickly replied: "Captain An, one third of the crystal cores have been used up." His voice trembled a little, and he was obviously very worried about the current situation.

In fact, the protective shield itself consumes a huge amount of energy, and now it has to constantly resist the fierce attacks of the mutant beasts, so its energy consumption rate is greatly accelerated.

If the energy cannot be replenished in time, the shield is likely to fail in a short period of time.

An Ning's heart sank. The situation was worse than she had expected. The rate at which the crystal cores were being consumed far exceeded her expectations.

She knew very well that if the protective shield was broken, the base's defense wall would definitely not be able to withstand the attack of the mutant beasts, and the people in the base would face a catastrophe.

Apart from the crystal cores distributed to people on a daily basis for enhancing or restoring their superpowers, the crystal cores stored in the base are limited after all, and it is impossible to replenish them continuously.

On the battlefield, the general is the soul of an army. If the general falls, the entire army will collapse immediately.

Similarly, there must be such a leader among the mutant beasts.

An Ning watched intently.

Suddenly, she discovered something unusual: in the center of the mutant herd, there was an extremely large mutant beast. Its body was like a small hill, emitting a terrifying aura.

There seemed to be an invisible barrier around this giant beast, and other mutant beasts would deliberately keep a distance when passing by.

An Ning's eyes focused. She knew very well that this giant beast was definitely the biggest threat to this attack on the base.

So, she gave the order without hesitation: "Change tactics, all psychics, concentrate your firepower and attack the giant mutant beast with all your strength!"

Following her order, the psychics quickly took action. They used their unique abilities one after another, and powerful energy beams and psychic skills shot towards the giant beast.

The giant beast felt the strong attack from humans and suddenly became extremely angry. It opened its bloody mouth and let out an earth-shaking roar. The sound seemed to break through the sky and made people's ears buzz.