Oriental Paradise.

Boom boom boom~
After thousands of rain-inducing shells were fired, the fine water mist in the sea fog condensed into raindrops under the influence of silver iodide, and then fell to the ground under the influence of gravity.

Ten minutes after the rain-inducing grenades were launched, it began to rain.

The reason it's raining instead of snowing at Oriental Paradise is mainly due to the temperature.

As the sea fog gradually spreads and the temperature continues to drop, water droplets in the air are affected by the cold air and will form snowflakes and fall.

Wow~
A torrential downpour hit the entire Oriental Paradise.

Residents of Oriental Paradise City rushed to buildings to take shelter from the rain.

The six fortified city walls in the distance also went into closed defensive mode. Zheng Shiwu and Hei Shou, the two captains of the militia, dared not slack off in the slightest and did their best to have the reconnaissance team use radar and sonar detectors to investigate the surrounding situation.

One hour.

Two hours passed.

Because they had experience passed down from headquarters, they were not in a hurry.

It wasn't until a full 24 hours had passed that they encountered the first wave of King Kong zombies.

Without any hesitation, Black Hand and his men used the tungsten steel alloy bullets issued to them by headquarters to kill the first wave of King Kong zombies.

"Old Zheng, this legendary Vajra zombie isn't all that great, is it? One bullet and it's down." Black Hand's voice came through the walkie-talkie.

Zheng Shiwu reminded him:

"Don't underestimate them. We've heard there are even more sonic resonance zombies behind them. The array of infrasonic detection systems that were sent from headquarters are still being set up at Oriental Paradise. We must be on high alert!"

Black Hand replied:
"I understand. How's it going on your end?"

"Everything is normal." As soon as Zheng Shiwu finished speaking, the investigation team rushed over.

"Reporting to the captain, a large number of zombies have been detected from the east and are heading this way; they are less than ten kilometers away."

Zheng Shiwu's pupils contracted slightly after hearing this.

Those giant zombies were just appetizers; now comes the main course.

The time to test them has finally come.

Headquarters base.

The Second Factory of the Fourth Outer City Military Industry Bureau.

After 18 hours of intensive work, the directional low-frequency sound wave transmitter and the long cylindrical sound concentrater were finally completed.

Inside the No. 2 factory building, Xue Zhihua pointed to the transmitter and sound focuser placed in the center of the building and said to Lao Zhou:

"Engineer Zhou, there are five sets in total, and they are all here."

Old Zhou nodded and said:
"Have the factory modify and process another twenty sets, and then transport them to other branch bases by train in a couple of days."

As for these...

"Give it directly to Ding Zhao and have him take it to the outskirts of the city and hand it over to Captain Li Gang."

"Okay." Xue Zhihua did as Lao Zhou said.

Soon, the first batch of modified directional low-frequency sound wave transmitters and long cylindrical sound collectors were delivered to Li Gang on the outer wall of the city.

Ding Zhao also brought more than a dozen operators of these two types of equipment.

"Let's get started," Li Gang said to Ding Zhao.

The operators quickly assembled the transmitter and the focusing device, and once assembled, they were ready.

Furthermore, an acoustic detection system is used to detect areas outside the base.

The frequency emitted by the tunnel zombie's claws during digging is 50 Hz, so detecting vibrations at this frequency is sufficient to pinpoint the tunnel zombie's exact location.

The error will not exceed 10 meters.

However, after more than an hour of sound wave detection, the sound wave detection system did not react at all.

Li Gang couldn't help but feel puzzled and asked Ding Zhao:

"Dr. Ding, is this working? It's been over an hour, and there's still no reaction."

Ding Zhao looked at the situation outside the wall. Due to the firepower network built by the city fortress to block the zombies from the outside, very few zombies could enter the area within ten kilometers of the Big Camphor Tree headquarters base.

Li Yu's previous orders were that the firepower of the fortress should be reduced only after the equipment proved effective, allowing the zombies outside to move closer to the walls.

Therefore, there are fewer zombies outside the walls now.

The number of tunnel zombies discovered by the giants sent out earlier was relatively small, which suggests that the number of tunnel zombies should have been relatively small to begin with.

He thought for a moment and then said:
"How about we move the equipment to the fortress and test it?"

"There are more zombies over there, but now the city fortress has a defensive fire network. There are fewer zombies outside the outer city. In addition, a reconnaissance team was sent out the day before yesterday to conduct a carpet search for the tunnel zombies. There are probably no more tunnel zombies outside the walls now."

But there will definitely be discoveries at the city's fortress!

After hearing his explanation, Li Gang felt that it made sense.

He nodded and said:

"Okay, then bring a set of equipment, and I'll send someone to deliver it to you."

"Okay, Captain Li Gang." Ding Zhao then instructed several experts to pack up a set of equipment and put it back in the box.

A few minutes later, he arrived at the wall with four experts and boxes in the elevator.

The driver sent by Li Gang arrived at the elevator just in time, picked them up, and drove directly to the entrance of the passageway of Fortress No. 5.

The lead driver, Xiao Zhao, showed Li Gang's approval order to the tunnel management personnel.

After seeing the permit in his hand, the tunnel management personnel did not check the boxes they were carrying and allowed them to enter the underground tunnel directly.

Generally, all passageways are searched to prevent people from carrying dangerous items in or out, taking things from carts, or bringing dangerous items inside.

The underground passageway was very well lit, with light bulbs installed above it.

Compared to the cold outside, the temperature in the underground tunnels is relatively high.

Ding Zhao from the military industry department and the four experts behind him were entering the underground tunnel for the first time, their eyes filled with curiosity.

The underground tunnels are not open to civilians, and even combat personnel and plantation workers who have received approval are prohibited from entering.

Although the military industry department had cooperated with the city fortress in its early stages of construction, helping to build the fortress's weapon systems.

Some people from the military industry department had also been to the tunnel, but Ding Zhao and his group were not in charge of this project before, so they were not very familiar with the situation here.

Seeing them standing there blankly, the driver, Xiao Zhao, realized it was their first time getting off the bus.

Then he pointed to the small cart on the tracks and said, "Let's go up like this."

As he spoke, he nimbly jumped onto a small cart. The cart was secured at the bottom, so it did not tilt even after he jumped on.

Ding Zhao looked at the carts with curiosity, some of which contained weapons and ammunition.

"Hurry up and get on!" Seeing that they were not moving, Xiao Zhao jumped off the stroller again and walked over to them, urging them on.

"You guys, help them carry the boxes," the driver, Xiao Zhao, said to the other members of the accompanying protection team.

Several combat personnel quickly stepped forward to help carry the boxes.

These boxes were quite heavy. The expert originally wanted to carry them himself, but when they saw that the railway was moving quite fast, and considering that their physical fitness was not particularly good, they were not sure if they could jump up with such heavy boxes.

So I had no choice but to hand the box over to them and tell them to hold it carefully and not to bump it.

"Heave-ho!" Ding Zhao was the first to jump onto the cart. He was a little clumsy at jumping on it for the first time and almost fell.

However, he managed to grab the handrail of the cart and steady himself.

Seeing this, Xiao Zhao stepped forward and began to teach the experts.

"Like this. Take a running start, then grab the handrail and jump up."

As Xiao Zhao spoke, he demonstrated the procedure right in front of them.

Just then, a group of planters came down from behind and effortlessly jumped onto the wheelbarrow. They looked on with curiosity at the workers and the bespectacled experts, whispering amongst themselves:

"What do these people do?"

"I don't know, they seem too scared to get on the bus, lol. They're afraid of this?"

Perhaps influenced by the ridicule of the planters, the experts blushed and, imitating Xiao Zhao's actions, jumped onto the cart.

To their surprise, following Xiao Zhao's instructions, getting on the stroller wasn't as difficult as they had imagined.

After seeing them get on the trolley, the combat personnel protecting them quickly ran over and jumped onto the experts' trolleys, sharing one with them.

The underground tunnel is very long, about ten kilometers.

Ding Zhao surveyed the underground passageway; the entire passageway was straight without any turns.

However, because the passageway is so long, you can't see the end of it when you look ahead from the stroller.

The rails beneath the cart rolled steadily forward, propelling the cart along.

As Ding Zhao and his group stayed in the passageway for a long time, the unchanging environment around them gave them the illusion of traveling through a time tunnel.

Twenty minutes later, they arrived at the foot of Fort No. 5.

Before arrival, loudspeakers on both sides repeatedly played reminders, indicating that people on the carts could prepare to get off.

Xiao Zhao jumped down first, then helped Ding Zhao and the others.

He helped Ding Zhao up and said with a smile:
"Ding, you'll get the hang of it after you do it a few more times."

Ding Zhao looked ahead and saw a fork in the road, where traffic automatically split.

One direction led to a circular vault on the right side of the city fortress, while the other continued forward towards the plantation outside the city.

People sitting on the carts don't have to do anything; they are automatically directed to their seats.

He was very curious about how all this was done, so he asked Xiao Zhao:

"How does this automatic traffic splitting work?"

Xiao Zhao pointed to the cart:
"The red cart leads to the city fortress, while the green one leads to the plantation outside the city."

Also, didn't you notice that the tracks on the branch line are divided into upper and lower layers?

The red carts have slightly different wheels from the green ones. The railway tracks at the fork in the road have a double-layered hydraulic system; different carts are automatically diverted to different directions as they pass.

Ding Zhao walked to the fork in the road and clicked his tongue in amazement, "What a clever idea! It's really great."

Xiao Zhao laughed and pointed to the railway tracks leading to the warehouse on the right side of the city fortress, saying, "Go in this way, and then the porters will carry the things up there."

He then pointed to another branch line where the railway joined the city's fortress and said, "This railway goes around the basement of the city's fortress and then comes out from there, returning to the edge city."

These railway tracks operate 24 hours a day, powered by electricity from the headquarters base.

Ding Zhao's eyes lit up as he nodded and said, "Very good, very good. It seems there are quite a few capable people in the construction department."

At this moment, the experts and combat personnel all got off the trolley.

Time was tight, so Xiao Zhao quickly said:
"Let's go up now."

"Okay." Ding Zhao followed Xiao Zhao.

They passed through a narrow passage, and suddenly the space opened up before them to a two-thousand-square-meter underground space.

Although the buildings above the city fortress are only a few hundred square meters, the underground space twenty meters below is quite large.

This underground space has three levels.

The three underground levels housed a large quantity of weapons and ammunition, with the largest number of solid napalm bombs also located here. The third level served as a temporary warehouse for the city's fortress.

The second basement level is used as a storage room, where replaced guillotine blades and some replacement firearms are also stored.

The basement level houses a rest area and an emergency medical room, where combat personnel can come down to rest for a while when they are tired.

They can rest here so that they can rush up to the fortress at top speed if it is threatened.

Xiao Zhao led them to the elevator lobby, where there were four elevators in total.

Two elevators are for passengers, and the other two are specifically used for transporting ammunition.

They carried their suitcases up the elevator.

Xiao Zhao pressed the button for the top floor, and the elevator went up very quickly. A dozen seconds later, they arrived at the second-floor combat platform.

The second-level combat platform is relatively narrow, housing over forty combat personnel, as well as artillery, ammunition, and other equipment that take up considerable space.

In addition, the second-level platform is now in a closed defense state, making it even narrower.

After the elevator doors opened, they saw Liu San, the person in charge of Fortress No. 5, who had been waiting there.

"You've finally arrived. Come on, I'll take you to see our captain." Liu San saw Xiao Zhao and quickly grabbed his hand, leading him south towards the second-level platform.

"Wait, let me introduce them to you," Xiao Zhao said, struggling.

Ignoring everything else, Liu San shouted loudly:
"Oh dear, let's introduce him to Captain Tong later."

Boom boom boom!
Ding Zhao and his men listened to the sounds of gunfire and artillery all around them, and even the dust on their heads was shaken off by the firing of shells.

The noise level was extremely high on the city fortress side.

People either shout or talk through headsets.

"Quick! Help me load the bullets!"

A man operating a heavy machine gun shouted into the corridor.

Soon, a combatant carrying a box of tungsten carbide heavy machine gun bullets ran over.

"Three o'clock direction, pay attention to the three o'clock direction."

"Notify the first-level platform to control the zombies below the wall. They're piled up to over ten meters high. Burn them immediately!"

The air was thick with the smell of gunpowder, dark and gloomy, and the combatants around us were all shouting.

Or he'd have a murderous look on his face, staring straight outside while manipulating the guns and cannons in his hands.

There were also ammunition carriers running around, exhausted, and people slumped against the wall, drinking water and taking a short rest.
These people's faces were covered in soot, from the long battle that had left them with gunpowder and a lot of dust.

Ding Zhaoxin was shocked. These experts from the military industry department were in a safe military factory, so enclosed that they couldn't even hear the gunfire outside.

They regularly go to and from get off work, eat, sleep, and even listen to music while drawing blueprints in the work area.

A picture of peaceful and serene life.

Although they knew that a battle against zombies was taking place outside.

but
They had never been to the front lines of combat.

The scene on the front lines of the battle filled Ding Zhao with a sense of shame.

Compared to the environment of these combat personnel, those of them who stayed in the military industry department in the outer city were practically living in paradise.

"Captain, I've brought the person here." Liu San pulled Xiao Zhao and ran to Tong Rugui.

Originally, Bai Wenyang was in charge of the city's five, six, and seven fortresses, but he and his team fought for a week straight.

They have now been replaced by Tong Rugui and his team.

After hearing Liu San's voice, Tong Rugui turned to look at Xiao Zhao, then focused her gaze on Ding Zhao and the others.

"Welcome, welcome. Captain Li Gang has already contacted me by radio and asked me to fully cooperate with you in the experiment."

"Tell me, how do I need to cooperate?"

"Hello, I'm Ding Zhao, and I'm in charge of this experiment." Ding Zhao extended his hand.

Ding Zhao's voice was too soft; he wasn't used to the way people spoke here.
So Tong Rugui didn't hear what he said clearly, but seeing him extend his hand, he could guess what he meant, so he quickly shook hands and shouted:

"No need for formalities. Just tell me how you need my help. We're quite busy here and don't have time for anything else. Just tell me how to do it!"

(End of this chapter)

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