graduate School.
A secret room separated by tempered transparent glass.
At this moment, there were more than a dozen zombies of various types locked inside, roaring and roaring at the nearby humans outside.
"Let's get started" An old man with gray hair and a serious face gave an order.
Then, a short-haired beauty standing next to him activated the button in front of him.
Hiss In the secret room opposite, light yellow gas continued to blow out from the ventilation duct.
The old man's eyes were solemn and he said in a deep voice: "Qianqian, you control the time, and others are responsible for recording the reaction conditions of the experimental subjects."
"Um."
The short-haired beauty nodded.
Then take out the timer.
There were still a dozen staff members left, who began to divide their work and record the status of each zombie.
"Ten seconds" "Experiment No. 1 is unresponsive and has stiff limbs."
"Experimental Subject No. 2 began to move slowly" "" "Experimental Subject No. 12 is normal and seems not to be affected by the poisonous gas."
In the laboratory, human voices kept ringing.
One after another, various data are reported.
"twenty seconds" "Experiment No. 1's central nervous system was damaged and lost its ability to move."
"Experiment No. 2's central nervous system was affected and his ability to move was slowed down." "" "Experimental Subject No. 12 is not affected by the poison gas and everything is normal."
Five minutes later, all the data and materials were gathered in the hands of the old man.
He took a look and sighed: "The poison gas we extracted from the mutated wormwood is still too weak."
After hearing this, the short-haired beauty named Qianqian smiled and said: "Director.
Artemisia poisonous gas can effectively kill ordinary zombies and inhibit the activity of first-level mutant zombies.
For humans, this is already a destiny-changing weapon."
Great invention."
"That's right."
A smile broke out on the old man's face.
Then, his expression straightened and he ordered: "Qianqian, please immediately take all the gas bombs and hand them over to the military."
"good."
The short-haired beauty nodded, then turned and left.
No one expected that the fire attack would bring such tragic consequences.
The outer city wall collapsed, but people were evacuated in time.
The damage was not great, but a large amount of weapons and supplies were buried by the collapsed city wall.
This is a heavy blow to all the survivors struggling to resist the zombie tide.
Withdrawing into the inner city, not long after, the black mass of corpses surged over the ruins of the collapsed city wall.
The group of corpses began to attack the inner city.
The inner city is the third and final line of defense.
If it cannot be defended, the last home of all survivors in Xibu City will be destroyed.
Few people can escape the sharp claws of zombies. therefore.
The inner city cannot be broken and must be defended.
Over at the military factory, all the explosives were delivered in improvised explosive packages.
All the gasoline stored in the city was also shipped.
Under the inner city, there were constant sounds of dense explosions.
Fire shot into the sky.
Zombie remains are everywhere.
Having learned from the previous lesson, all the people throwing gasoline barrels this time were power evolvers.
The oil drum was thrown thirty meters away, and then exploded by a sniper's gun and ignited.
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Under sniper fire from explosive oil barrels.
The zombie tide suffered heavy casualties and could not get closer.
Even throwing similar ones can't do it.
But the situation continued until around 3 p.m.
A reversal begins to occur.
The explosive packs are gone and the gasoline is gone.
The ammunition was also used up, and there were not many cold weapons such as bows, crossbows, spears, etc. left.
Facing the incoming tide of corpses, the survivors on the tower were reduced to an embarrassing situation without weapons to resist.
"Hurry up and send someone to transport the rocks.
If you hit them, you will kill these bastards."
Yan Jin yelled at the back-office staff responsible for material transportation on the other end of the phone.
Soon, cartloads of stones were transported to the tower.
All the personnel above began to lift stones and use the simplest and most primitive weapons to defend the last line of defense of Xibu City.
Stones fell like raindrops.
Those ordinary zombies have weak defenses and will die immediately if they are hit on the head by a stone.
But to power-type zombies, they are not threatening at all.
The big guys in the group of corpses started to repeat their old tricks again, grabbing the same kind of people around them and throwing them towards the city wall.
This time, without bullets and sniping, the sparse number of supernatural evolvers attacking could not eliminate the zombies flying all over the sky.
A few seconds later, the city wall was in chaos.
The roars mixed with the screams were endless.
Ghostly Crying Vine flies in the sky.
Li Ba led Yang Jian and a group of evolvers to strangle zombies on the city wall.
Ya'er, on the other hand, drove the big flower to swoop back and forth, constantly attacking the zombies that were thrown against the city wall.
How long can it last?
Li Ba doesn't know.
No one knew in their hearts that their only belief at the moment was to defend the inner city and not be able to retreat even half a step.
The tide of corpses is approaching the city.
After a few low roars were heard, the powerful zombies began to stack up one after another, as if they were trying to pile up a ladder of meat so that the zombies behind could rush up the city wall.
"If you block them, you must not let them rush forward."
Li Ba yelled.
People ran along the city wall, and the Devil's Crying Vine came out, attacking the powerful zombies below like poisonous pythons.
Other evolvers also knew that the situation was serious and launched violent attacks one after another.
As for the zombies thrown onto the city wall, they can only be dealt with by ordinary armed personnel.
The zombies' bodies were originally much stronger than ordinary people.
In the fierce hand-to-hand fighting, blood flowed into rivers on the city walls, dead bodies were everywhere, and the damage was heavy.
At this moment, Wang Feng came.
He also brought with him a dozen people in white coats.
Each of them carried a password box in their hands and came to the city wall.
They immediately took out tubes of yellow-green reagents from the box and threw them directly. bang bang The test tube shattered, and the yellow-green liquid inside splashed and evaporated within a few seconds, creating a pale yellow gas.
Oddly enough, these yellow gases are harmless to humans, but the corpses approaching the city wall below began to fall in pieces after more than ten seconds.
Including those power-type zombies, they staggered around as if they were drunk and lost their ability to attack.
In just two or three minutes, tens of thousands of zombies lost their fighting power and fell down in the barbican between the ruins of the outer city and the inner city.
There are less than a hundred left, all of which are mutated zombies of level two or above, as well as alien zombies, which seem to be unaffected by the yellow gas.
However, they were few in number.
After approaching the city wall, they were all quickly eliminated with the joint efforts of Li Ba and other evolvers.
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The zombie tide did not retreat due to the sudden heavy casualties.
On the contrary, under the low roar of the Corpse King, the black mass of corpses came like a tide.
However, as soon as they entered the urn city and came into contact with the rising yellow gas, it didn't take long before they began to fall in pieces.
The seemingly fierce offensive was easily broken down.
"Qianqian" Li Ba walked quickly.
Ding Qianqian was among the group of people in white coats led by Wang Feng just now.
"Brother Li."
Ding Qianqian greeted with a smile.
"What is this thing that is so powerful?"
Li Ba stared at the yellow gas filling the urn city, his face filled with wonder.
"Artemisia poisonous gas" Ding Qianqian said everything she knew.
She told Li Ba that this was a poison gas extracted from a mutated plant by the institute.
It was harmless to humans, but it was highly toxic to zombies and could corrode their nerve centers and make them incapacitated.
"It's a pity that this poisonous gas has not been fully developed yet, and it can only be effective against zombies below level two."
A trace of regret flashed across Ding Qianqian's face.
"The most terrifying thing about the zombie tide is the huge number.
As for a small number of high-level zombies, they don't pose much of a threat to us."
Li Ba said solemnly.
Artemisia poison gas is extremely lethal to ordinary zombies and first-level mutant zombies.
If there is enough poison gas, it is possible to wipe out the entire zombie tide, let alone defend the city."
Wang Feng, Yan Jin and other senior military officials came over.
Nowadays, with the defensive barrier formed by the poisonous wormwood gas, the tide of corpses basically kills as many as possible.
The few remaining high-level zombies do not pose much of a threat to the city wall.
As a result, all of them had relaxed smiles on their faces.
"This type of mutated wormwood is rare in number and is extremely difficult to cultivate artificially."
Ding Qianqian's next words made everyone feel extremely heavy, "All the Artemisia poisonous gas currently extracted by the institute has been taken out, and there is no inventory."
Li Ba looked at the yellow smoke rising from Wengcheng and the groups of corpses rushing towards him, and asked, "How long can this poisonous wormwood gas last?"
"An hour."
Ding Qianqian answered simply.
"In one hour, at the current speed, we should be able to kill nearly 100,000 zombies."
Wang Feng said slowly: "From yesterday evening to now, we have eliminated about 200,000 zombies.
Including the poisonous wormwood gas that can kill 100,000 zombies, the number eliminated accounts for about three-fifths of the entire zombie wave. " "In other words, there are still about 200,000 zombies left."
Yan Jin said.
Looking around, everyone's faces were filled with solemnity.
Two hundred thousand zombies, if there is enough ammunition and firepower, it is not too difficult to deal with them.
However, Xibu City has now run out of ammunition, and there are not even a few crossbow arrows left.
If you want to use human flesh and blood to fight against the zombies, the result can be imagined.
"No matter how difficult it is, we have no room to retreat, we can only hold on."
Li Ba looked at all the military leaders and said slowly: "Order to recruit men from the city.
We must be prepared for hand-to-hand combat." s: Alas, it was blocked for no apparent reason.
As a result, Ninto had no thoughts the whole morning and couldn't code a single word.
Now that I have finally solved it, cheer up and work hard to code.
Here is the first update, asking for support.
Brother, uh, recharging seems to be very simple.
If you can subscribe, please support it as much as possible
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