For An Ya, who holds a master's degree in agronomy, producing fertilizer is not difficult.

However, when it comes to mixing pesticides, more specialized chemical knowledge is required, so she came here to find Bai Jie.

Bai Jie, An Ya, Meng Yu, and others were near the point of freezing and starving to death outside Big Camphor Tree Base last winter when they decided to take a gamble and came to seek help outside the base.

They arrived just in time, as Old Lv had just been tested and joined Big Camphor Tree Base.

At that time, Li Yu was also considering the future gender ratio within the base.

Later, he heard Old Lv say that these women were very talented and that they all came from Jiefang City.

Moreover, his Second Aunt and others mentioned that they had previously received some care from Bai Jie and her friends when they were in Jiefang City.

This world is truly marvelous, where a small seed can often yield a good crop.

Bodhisattvas fear cause, commoners fear effect.

Li Yu's experience in the apocalypse made him reluctant to form too strong relationships with others.

But since his Second Aunt and others had received their favor, they had to repay it.

This was Li Yu's apocalyptic principle: repay kindness with kindness, and avenge enmity; repay a favor threefold, and eradicate any trouble completely!

Initially, he intended only to save their lives, not expecting that their arrival would significantly enhance the soft power of Big Camphor Tree Base.

Agronomy, chemistry, medicine, and Xiao Shi, in particular, brought immense benefits to the base.

If they hadn't met Xiao Shi, Luo and others might not have joined, nor would they have revealed the location of tanks and mortars to Li Yu...

Without An Ya, it would have been hard to establish such a large-scale, high-yield plantation or to build an underground farming base. Without stable food production, Big Camphor Tree Base couldn't have supported expansion and collaboration models...

Due to Li Yu's assistance, rescuing them from utter despair, their gratitude toward him was beyond words.

Their loyalty to Li Yu was maxed out!

Especially after coming in and finding the base to be a place with such warmth, they were even more unwilling to leave.

Initially, they were worried about whether a place so warm-hearted could adapt to the harsh apocalypse.

Later, they realized they had oversimplified things!

When facing enemies, they were decisive and ruthless, even to a point of brutality that seemed almost perverse.

However, witnessing this didn't cause them any aversion, but rather, it made them love Big Camphor Tree Base even more.

This cruelty towards enemies gave them a profound sense of security, and Bai Jie loved Li Yu all the more unabashedly for it.

When facing Li Yu, however, he exhibited the warmth of a spring breeze, and this sharp contrast left them somewhat bewildered but also appreciative.

Once they understood, they realized that Li Yu regarded them as his own people.

Stern toward outsiders, gentle toward insiders.

It wasn't until much later that they fully understood the truth in Li Yu's tightly-held hand and the words he spoke: "Once you join us, you're family."

...…

Cliffside duty room.

Shang Xue'er and Song Qi stood on the wall, watching Li Hang and others slowly driving past in their vehicles.

Li Yu watched as the vehicles emerged from the pine trees, flicked his cigarette to the ground, and stamped it out with his foot.

"Is everything here?" Li Yu asked, seeing just a neatly crafted iron railing on the vehicle, along with some PVC pipes.

Li Hang responded, "No, we're just transporting this batch for now. Uncle Qin and the others are making the rest, and they'll finish soon. I'll go back to get more afterward."

"Okay." Li Yu nodded slightly, indicating his approval.

He Chao and He Bing, who came with Li Hang, unloaded the iron railing and PVC pipes together.

Lao Xie hurried over to help, transporting these items from the vehicle.

Ten minutes later, everyone had moved the items off the vehicle.

Li Hang returned to the car, turned to Li Yu and said, "Brother, I'll go back and get the rest of the iron railings."

Li Yu waved him off, indicating he should go.

Then he turned to everyone else and said, "Let's start, hurry up and get these things down, Old Lv and the others are waiting below."

He also notified Old Lv and Xu Zhen below to be on standby.

Lao Xie and others tied the iron railing with thick ropes, using a boulder as a barrier, and slowly lowered it down.

Very soon.

Old Lv and the others saw the iron railing, reached out to receive it, and then lowered the PVC pipes one by one.

As everyone worked in an orderly manner, Li Yu also looked around the cliff area.

Earlier, while waiting for Li Hang and the others, Lao Xie used a telescope and noticed some movement at the cliff's edge near the forest by the little cove.

But it turned out to be just birds, so they didn't pay any more attention to it.

Nonetheless, Li Yu continued to vigilantly observe the surroundings, as although zombies appeared less frequently during the day, they were still occasionally sighted.

Everyone moved swiftly, transporting the iron railing and other items down in less than five minutes.

...…

Sewer.

After Old Lv and Xu Zhen received the iron railing, they immediately began installation and transportation.

Due to the limited space in the sewer, only two people could stand side by side, so Old Lv held the railing while Xu Zhen installed it.

The continuous sound of welding, accompanied by intense welding sparks, caused Old Lv to turn his head to avoid eye damage.

Xu Zhen, wearing a welding helmet, carefully welded the joints and used a special method to secure the PVC pipes, pulling the cables to the rear.

Wang Cheng, who came down with them, carefully adjusted the PVC pipes and cables, ensuring the cable extended to the well in the Inner City, and then upward...

Time passed by little by little.

Li Hang continued to transport more iron railings and PVC pipes down.

After Xu Zhen finished welding the iron railing, Wang Zi gave it a push—it was very sturdy!

He inspected the waterproof-protected switchboard, which could control the iron railing, opening and closing it.

"Wang Cheng, is the wiring connected?" Xu Zhen shouted from the sewer toward the back.

"Yes, it's all connected up top now. We can power it up and open it anytime."

Their voices echoed down the long corridor.

"Turn it on, let's test if it works!"

"Alright." Xu Zhen, standing at the bottom of the well, shouted up to Ding Jiu, "Engineer Ding, turn on the power switch to see if the iron railing opens smoothly."

Ding Jiu immediately responded, "Okay, I'm turning it on."

Raising his hand, he flicked the power switch that was fed from the Inner City.

Xu Zhen and Old Lv stepped back slightly, watching the iron railing.

This iron railing was much heavier than the original, utilizing waterproof materials to enhance its sturdiness.

Rumble—

The power transmission began, and the iron railing slowly began to open outward.

This iron railing was designed to open outward rather than inward, allowing accumulated sediment and debris inside to be flushed out.

"It works!" Xu Zhen shouted back inside, "Close it to test once more."

Ding Jiu then lowered the power switch again.

At the cliffside, the sewer's iron railing slowly started to close!

Successful!