Among them are things that ordinary people seldom understand, involving some trace elements needed in chemistry, some materials required in medicine, and even some precious seeds needed in agriculture.

Although Li Yu bought seed packets that could be preserved before the Doomsday, spending a lot of his money.

But there are still some seeds that can't be bought on the market.

After the outbreak of Doomsday, he also got some seeds back from the Agricultural Science Academy in the city center, but seeing this horrifying natural disaster, he still felt that he should try to collect all the seeds he could, in case they go extinct later.

Not to mention anything else, just last year's extreme heat and extreme cold killed a large number of plants. Don't be fooled by the greenery all around now; no one knows what plants have already disappeared.

The list in Old Bi's hand, the writing is small, not very good looking but it's clear enough to read the words on it.

Then he distributed the thick stack of lists in his hands, all of which were printed by Li Yu the last time he returned to the Big Camphor Tree Base.

These Cooperative Personnel reached out to grab them, under command, only allowing each person to take one sheet, but there were too many people.

So each small group was given only one sheet.

After distributing these lists, these people took the grain that had just been distributed and left slowly, their expressions unclear.

Although there's no engineering work for tomorrow, at least there's hope. Hope that there will be new engineering tasks later, hope to find what's on the lists.

Thus, after more than a week of wall repairs and trenching, the vast majority of them hadn't consumed all the food distributed to them daily, most saved it for emergencies.

No one expected the emergency food to be used up so quickly.

After leaving the Oil City fortress, many people didn't go to the small village town two or three kilometers away as they used to, but scattered like fairy dust.

Some planned to try their luck elsewhere, some perhaps happened to see some items on the list and knew where to find them, so they started searching, while others returned to the nearby small village town, waiting for the next engineering task from the Oil City.

Li Yu watched them leave, letting out a long sigh.

He turned to Li Tie, Ju Tianrui and said, "We should also prepare to return to the Big Camphor Tree Base. Check again tonight, and head back to the Big Camphor Tree Base tomorrow."

Luo stretched, pounded his shoulder and said, "We're finally going back, I miss the bed at our base. Once we're back, I'll ask Mr. Hua for some cupping therapy."

His words spoke the minds of many.

Last time, the helicopter loaded with guns and ammunition didn't take many people back, just Li Yu and a few others. Most others stayed in the Oil City fortress. It's been almost a month now. 𝘧𝓇ℯℯ𝑤ℯ𝘣𝓃ℴ𝓋𝑒𝑙.𝑐𝘰𝑚

In their hearts, unknowingly, they've developed an inexplicable sense of belonging to the Big Camphor Tree Base, and they miss it after being away for a long time.

Perhaps because the high walls there gave them a sense of security, perhaps because the infrastructure there is good, with water and sufficient electricity, or maybe it's the people there...

But no matter what, they're about to head back.

Ju Tianrui was slightly delighted when he heard Li Yu say they'll return to the Big Camphor Tree Base tomorrow. So much has happened during this period, he was a bit tired too. Seeing Old Bi in the distance, still happy because he just finished the trench digging and wall repair, he finally could breathe a sigh of relief with a smile on his face.

Ju Tianrui felt a pang of compassion seeing his smile.

He still has to stay here for a month.

After all, the rotation policy starts when the main force returns to the Big Camphor Tree Base.

After Li Yu issued the order to return tomorrow, Ju Tianrui and the others left to check and prepare.

Only after Old Bi realized they were leaving tomorrow, his previous happiness turned to sadness.

Luo left, Lao Yi left, Ju Tianrui, Xiao Jun also left, even Dapao, who often came to play cards with him, and a few others also left.

However, it wasn't possible to leave only Old Bi behind. There are still forty people left here.

There are also Zuo Ruxue and others, whom Li Yu brought from the Big Camphor Tree Base last time, Old Bi knows Zuo Ruxue too, at least they're acquaintances.

Old Bi's group of forty people, Zuo Ruxue's twenty-seven, more than sixty people together.

Plus, the sixty or seventy people left in the Original Oil City, totaling nearly one hundred and forty people.

With the heavy weapons and firearms Li Yu left for Old Bi, guarding the Oil City shouldn't be a big problem.

The sky turned dark.

The sun set in the west.

Not far from the Oil City, in that small village town.

Several dozen cooperators shut the doors tightly, then hid in some of the more intact houses.

About half an hour passed.

Night fell.

Zombies appeared one after another, coming out of the wilderness, out of rivers, wandering everywhere.

A tattered Taoist, his face covered in dust, wandered into this small village town.

He looked at the nearby Oil City, somewhat hesitant.

In these few days, he has been living rough, on the move, following the direction the helicopter flew that day, walking all the way here.

Because the helicopter flew in a straight line, his compass was also very accurate, he walked along this direction all the way, and luckily found this place.