Yang Tianlong looked at Li Yu’s back, sighed, and said: "Xiao Yu, just like us, just returned from outside, but he has to handle so many things right away, it’s exhausting."

Li Tie felt somewhat downcast; Li Yu, as his cousin, was always at the forefront, stabilizing and continuously strengthening the base, putting in tremendous effort.

He silently made up his mind to grow into someone who could stand independently, to lighten Li Yu’s burden.

...

Ding Jiu and Li Yu were on the wall, able to see the construction situation in the Outer City.

The First and Second Outer Cities both have twenty acres of land to build greenhouses. The workload is not less than that of the Inner City, even bigger.

At this moment, the First and Second Outer Cities were being constructed simultaneously, mainly by He Chao and Lao Yi and nearly 50 others who were busy on it.

The construction progress was about the same as the Inner City.

Ding Jiu introduced to Li Yu: "Now in the First and Second Outer Cities, Xiao Qian and Xiao Liu are mainly in charge; they’ve studied civil engineering, so there’s no problem doing this. Should we go down and take a look?"

Li Yu saw they were busy, shook his head, and said: "No need, just take a rough look. You need to pay attention, and you should tell Xiao Qian and them, speed is one thing, but the most important thing is the quality issue. This is for our own use, we must ensure quality; don’t let a gust of wind blow it away."

Ding Jiu quickly said: "That’s for sure. I follow the Inner City’s projects throughout, and I go to see the Outer City’s projects a few times daily. Also, your father often comes to see, so there’s definitely no problem."

"Okay." Li Yu nodded slightly.

Just as he was about to return to the Inner City, he saw He Bing walking out of a small house in the Second Outer City, holding something in his hand.

So he said to Ding Jiu: "By the way, how about the zombie engines Zhou Ran and He Bing are working on? Have you seen them?"

Ding Jiu said somewhat sheepishly: "I haven’t seen them. I’ve been busy building greenhouses these past few days and haven’t had time to check. But I heard your father mention it, saying it’s quite good, and Li Hang is also helping out."

Li Yu was pleasantly surprised at the news.

He said: "Okay, let’s go down and have a look. This kid Xiao Hang, I haven’t seen his shadow since I came back."

After saying that, the two went down the wall, heading towards the small house next to the residential building in the Second Outer City.

After coming down the wall, they met Xiao Qian and He Chao and the others.

"Director Li."

"Director Li."

"Director Li, you’re back?"

...

These people were very excited to see Li Yu, their sweaty faces full of admiration.

For these Outer City personnel, Li Yu held the highest position in their hearts.

It should be known that whether it was He Chao or He Bing or Luo and the others, Li Yu was the one who lent a hand when they needed it most, saving their lives.

He also provided a safe place where they could have enough to eat and wear.

Moreover, ever since they came in, they gradually felt the family-like atmosphere of the Big Camphor Tree Base.

The huge gap between inside and outside made them deeply proud to be a part of the Big Camphor Tree Base.

Especially He Chao and the others, every time they went out, people outside envied and feared when they heard He Chao and the others were from the Big Camphor Tree Base.

This made them cherish it even more.

Li Yu greeted them with a smile.

Since he was already down, Li Yu went over to chat with them for a bit, boosting their morale.

.....

Passing through the planting area of the Second Outer City, Li Yu and Ding Jiu arrived at the entrance of the small house next to the residential building.

Inside the room, the voices of Zhou Ran and Li Hang could be heard.

"Li Hang, I think the zombie engine we’ve made, combining our three ideas, is already good enough."

"He Bing has gone to get something. When he returns, we can test it again. Hehe, my big brother will surely be shocked by our creation this time."

Creak——

The door was pushed open.

"Oh? Is that so? Let me see how surprised I can be." Li Yu said with a smile, pushing the door open.

"Brother, you’re back?"

"Director Li."

The two of them saw Li Yu, their faces beaming with smiles.

In front of them were three zombie engines, with the one in the center looking the most delicate, with a zombie moving inside.

Behind this zombie engine, there was a battery unit, and the electricity level on it was constantly changing.

This zombie engine operated with little noise, only a slight mechanical whirring sound.

Li Hang, seeing Li Yu looking at this zombie generator, excitedly and proudly said: "Brother, let me tell you, this zombie generator can produce almost the same electricity as a manpower generator, generating 0.35 degrees of electricity per hour and can operate continuously for 24 hours. One zombie generator can produce 8.4 degrees of electricity in a day. A hundred zombies can generate 840 degrees."

degrees!

Li Yu looked at him in surprise.

To know, during natural disasters before, many cooperative personnel and extra staff were generating electricity manually by hundreds of people, and the daily electricity production was only 400 degrees.

After all, humans get tired, and if an average person doesn’t have proper food supplementation, riding for two or three hours a day would be exhausting.

But zombies don’t tire, and they move at a steady pace, meaning that the electricity generation stability of zombie generators is much higher than human-powered generation.

One zombie can almost equal ten humans in generating electricity.

Moreover, people need food, but zombies don’t need feeding.

Compared to pre-Doomsday, zombies are the cleanest source of energy.

Li Yu, a bit puzzled, asked: "The activity speed of these zombies, won’t it slow down after a while?"

Zhou Ran said: "We’ve also tested; it just needs to spray some water on the zombies’ heads, and their activity speed can be maintained."

"How long does it last roughly?"

Zhou Ran said: "Two days would be fine."

Li Yu pondered; he had long contemplated how many zombies maintain their mobility without blood food.

But he suddenly remembered that every time it rained, the zombies’ agility and strength would significantly increase, maybe because of the water.

Moreover, zombies can swim and like to hide in cool and humid places.

Perhaps water molecules in the air and water sources from mountains, rivers, and lakes, along with the rain, are ways for these zombies to supplement energy.

Beyond flesh and blood, water is also a way.

Li Yu’s eyes glimmered with light; energy issues have been a significant limiting factor for development, both pre- and post-Doomsday.

At this moment, using these zombies can continuously generate electricity; this is a terrifying matter.

There are simply too many zombies outside.

In the Doomsday, what is most abundant, zombies are the most abundant.

For a moment, Li Yu looked at these zombies and even found them becoming cute.

So he seriously said to Zhou Ran and Li Hang: "This matter, don’t tell anyone."

Determined to make the zombie generator one of the most important secrets of the Big Camphor Tree Base.

Additionally, because Zhou Ran and the rest discovered the connection between water and zombie power, he thought it should be studied by Bai Jie and the others.

Li Yu again said to the two: "After all, these are zombies; you must be careful not to get hurt by them, and I think the safety needs to be further enhanced. You need to consider if there are hundreds, thousands, or even tens of thousands of zombies powering up in the future, how to ensure safety. This is the primary issue you need to solve next."

Zhou Ran and Li Hang both said seriously: "Understood."

Tap-tap-tap——

The sound of footsteps came from behind.

A surprised voice came: "Director Li, you’re back?"

.....