I'm not afraid that the zombies are powerful, but I'm afraid that the zombies will use their brains.

This is the experience that Xiao Ran summed up after five years of struggling in the apocalypse.

Now what Xiao Ran has to face is a zombie leader who is good at using his brain, and it is likely to be a second-order evolved zombie, and the danger is needless to say.

Xiao Ran turned around decisively and retreated with Chen An and Bingbing.

Since a strong charge can't force the zombie leader out, then prepare for a protracted battle.

There is no favorable terrain near the bomb shelter, so the best position to defend it is the entrance to the bomb shelter.

When Xiao Ran was renovating the air-raid shelter, he thought that there might be a large number of zombies attacking the air-raid shelter in the future, so the entrance was only one meter wide, but the depth reached three meters.

This is also Xiao Ran's last resort, and he will not use it easily unless he has to.

Now Xiao Ran has no choice but to use the terrain at the entrance to defend the air-raid shelter, keep killing the zombies that rush up, and finally force the zombie leader out.

Ordinary zombies could hardly resist Xiao Ran's rush, Xiao Ran quickly took Chen An and Bingbing into the air-raid shelter, and he stood at the entrance alone and killed all the zombies who rushed in.

Soon a large number of zombie corpses were piled up at the entrance, but soon the zombie attack stopped, Xiao Ran let out a sneer, he knew that the zombie leader would always let ordinary zombies die.

But soon, Xiao Ran couldn't laugh, because the ordinary zombies did not retreat after stopping the attack, but formed a phalanx only twenty meters away from the entrance, with a posture of blocking Xiao Ran inside.

If he just blocked the entrance and didn't let Xiao Ran and them out, Xiao Ran didn't have to worry at all, because he had stored a huge amount of materials in the air-raid shelter, and he might not be able to use them up if he hid in it for three or five years.

But of course, the idea of the zombie leader will not be so simple, and more than a dozen evolved zombies came to the back of the phalanx composed of ordinary zombies.

Most of these dozen evolved zombies were in the direction of body strengthening, and they did not rush up, but lined up behind the ordinary zombies, and behind them were four brain domain evolution zombies.

What really worries Xiao Ran is these four Brain Domain Evolution Zombies, because they are likely to have long-range attack methods.

Xiao Ran's idea hadn't fallen yet, and the four brain domain evolutionary zombies had already started.

A flame streaked through the air and headed straight for Xiao Ran.

Xiao Ran's eyes shrank, and instead of retreating, he took the initiative to rush forward, Tang Hengdao picked up the corpse of a zombie and collided with the flames flying over.

The flames exploded, the light was dazzling, and Xiao Ran couldn't help but close his eyes.

"Chen An! Shield! ”

When he closed his eyes, Xiao Ran shouted and quickly retreated.

This is just the attack of one evolved zombie, and there are three more.

Chen An heard the voice and hurriedly handed the one-person-high shield to Xiao Ran.

Xiao Ran hurriedly used the shield to protect his whole body, and in the next second, a strong energy fluctuation hit the shield, and Xiao Ran hurriedly exerted his strength, which blocked this attack.

Energy Bomb!

Another special ranged attack ability.

Xiao Ran's complexion became a little ugly again, because the energy bomb is similar to the energy vibration wave, which is difficult to detect with the naked eye, especially at night, it is almost impossible to find the trace of the energy bomb, and he can only rely on the induction of energy fluctuations to react.

However, the attack of the energy bomb is not only the scattered energy vibration wave, but concentrated to one point, once there is a mistake and is concentrated by the energy bomb, even if Xiao Ran's physical fitness is strong, I am afraid that he will be seriously injured.

If it weren't for the fact that this steel shield had withstood the attack of the energy bullet just now, dispersing most of the attack power across the entire shield, Xiao Ran would never have been able to follow so easily.

After the energy bomb, a red light flew out, hitting the steel shield with a bang, leaving a deep pit on the steel shield.

Xiao Ran hid behind the shield and didn't see the appearance of this red ray, but he felt the heat from the deep pit on the shield, and he also had a guess about this attack.

High temperature!

A person or zombie with the ability to heat up to hundreds or even thousands of degrees Celsius can heat anything in their hands, allowing anything that is otherwise not lethal to cause great damage.

The red light just now should be a piece of iron that has been heated to hundreds of degrees Celsius.

The iron hits the shield at a very fast speed, and a large amount of heat energy is released at the moment of impact, which changes the performance of the steel shield, so that a deep pit can be left on the steel shield.

But no matter how powerful that evolved zombie is, it's not impossible to penetrate the steel shield with one blow!

Xiao Ran was shocked by the strength of those evolved zombies outside, when another green light silently fell on the steel shield, making a sizzling sound.

Xiao Ran's face changed again, and this time he didn't need to look at him to know what kind of ability this was.

Corrode!

No matter how hard a steel shield is, it is just an ordinary industrial product, how can it resist strong corrosion ability?

It may be able to hold out after a few attacks, but if you let the corrosive evolved zombie keep attacking, within a few minutes, the shield will be completely destroyed.

What's more, there are three powerful abilities of flame, energy wave and high temperature, no matter how Xiao Ran looks at it, he feels that this shield can't hold out for even a minute.

Unexpectedly, the zombie leader not only advanced and retreated, but could even make different responses in a short period of time according to the changes in the situation.

This is beyond Xiao Ran's understanding of evolved zombies, because no matter how intelligent an evolved zombie is, it is impossible to make such a good response without rich experience.

He really couldn't figure it out, it had only been half a year since the end came, how could such a demonic evolved zombie appear?

"Chen An! Cannon! ”

In desperation, Xiao Ran could only change his strategy.

Originally, he didn't plan to use the machine gun, because the zombie leader on the opposite side was too smart, once the hole card of the machine gun was exposed, the other party would definitely come up with other ways to restrain the machine gun, and it would be difficult for Xiao Ran to use the machine gun to complete the final kill.

But the current situation is too dangerous, if you don't use the machine cannon to kill the four brain domain evolution zombies outside, Xiao Ran can't even hold the entrance!

Once the entrance is lost, a large number of zombies rush into the bomb shelter, and Xiao will regret it too late.

Chen An hurriedly handed over the loaded cannon to Xiao Ran, and Xiao Ran hurriedly threw away the shield, replaced it with a cannon, and fired at the location of the four evolved zombies.

Boom Boom!

A large number of cannonballs poured out, and the phalanx composed of ordinary zombies was torn apart in an instant, and the evolved zombies behind them only lasted for a second before being blown to pieces.

The four Brain Domain Evolution Zombies hiding in the back were also hit, and the Evolution Zombies with the ability of fire and energy waves were considered to have been blown up, but the other two Evolution Zombies seized the opportunity and escaped.

Xiao Ran couldn't see the situation outside, but he didn't dare to waste ammunition, and after three seconds, he released the trigger, put the cannon behind him, and hurriedly rushed outside the entrance, dragging the zombie corpses in, and piling up a simple fortification.

It is impossible to block the attacks of the evolved zombies with shields alone, but it would be much better if they were replaced with fortifications piled up by zombie corpses.

Xiao Ran moved quickly, but it took more than ten seconds to build a one-meter-five fortification, and while the zombies outside had not yet been reorganized, he hurriedly jumped back and hid behind the fortifications to observe the situation.