This figure is about the same as Xu Yue's initial estimate.

But after Zhao Yu heard this, he was speechless.

"Before the Red Turban Army rebellion, there were 450,000 households in Youzhou, with a total of 2.5 million people, never thought that in just 20 years, natural disasters and man-made disasters would lose more than half of the population!"

Looking at the shocked faces of Zhao Yu and the others, Xu Yue was expressionless, put away the data report, and got up to leave the mansion.

Back at the place of residence, Xu Yue went directly into the room, and the spirit body decisively entered the research room.

As soon as she entered, the dazzling red light pierced her eyes, and her soul body was obviously unwell, but it caused her physical discomfort.

The tech tree has grown from a small apple tree to a towering tree, with lush branches and foliage that fills the entire research room.

The foliage even overshadowed the boundaries of the research room, reaching into an unknown space.

Xu Yue couldn't see the part of the tree branches that were hidden by the space, and could only guess from the huge trunk above the laboratory how big the canopy of the technology tree was.

And the huge technology tree is now full of red energy fruits, and the scorching red light is the effect of the superposition of these lights.

Xu Yue squinted and got used to it for a while, and then she felt that it was not so dazzling.

Sitting cross-legged on the cool floor of the research room, Xu Yue took the trouble to count the fruits on the tree.

One, two, three......

After counting three times in a row, I made sure that the number of exercises matched the population, and it was indeed an extra 1,200 energy fruits on top of the original remaining energy fruits, so I was relieved.

Xu Yue looked at the red red sons in front of him, and he didn't find the ecstasy after the upgrade of the technology tree for the first time.

Instead, she was a little confused, not knowing what the tech tree was about.

Now you can collect famous calligraphy and paintings, as well as ancient historical books, you can also exchange energy fruits, but they are not as sharp as before the technology tree was upgraded.

This shows that the main source of energy for the tech tree has now become population.

1,200 new energy fruits, plus the original 200 left, a total of 1,400 energy fruits, such a sufficient 'wallet', Xu Yue didn't dare to exchange them indiscriminately.

After staring at the technology tree for a while, thinking about the unsolvable philosophical questions, Xu Yue directly gave up pursuing the truth behind the technology tree, took out a pen and paper, and planned the items that needed to be exchanged.

Seeds must be exchanged, the people take food as the sky, and the foundation of an agrarian country is grain.

Sweet potatoes and potatoes have to be replaced at least one of them.

She is tired of eating cabbage and gourd, so she will change some tomatoes, cucumbers, and peppers......

Think about the past, the technology tree was so hard to kill, and it was hard to get some cotton and hybrid rice seeds.

Now that there are so many energy fruits, I finally dare to boldly ask for them.

The seeds he wanted were all written, Xu Yue paused, and for a second she was entangled between armament materials and engineering tools, and decisively chose engineering tools.

Because many important tools cannot be forged at the current level of smelting, let alone manufactured in large quantities.

In order to maximize the value of each energy fruit, Xu Yue will change the semi-finished product if he can change it, and cut the price if he can't change it.

For example, the ordnance shovel, as long as the shovel does not shovel the handle, we can make it ourselves from wood anyway.

All pliers tools only need the metal part, the rubber wrap does not need to be used, we use the same cloth strips as we tie them.

Those that can't be saved, such as scissors, combination wrenches, chisels, saws, etc., can be exchanged for a few less, and then rotate between groups.

The tape measure is also in a box, there are steel rulers and tape measures, with high accuracy, which is much easier to use than the previous homemade.

Soon, the small research room was full of boxes and boxes of tools, as long as the tools that could be used now, Xu Yue cashed them out.

Wang Dayou and others also have a lot of tools available, but the batch of tools exchanged by Xu Yue are all made of various composite materials, and the quality is not at all the same as what Wang Dayou and others are making now.

Xu Jiajun's self-made saw will break after a few uses, and then it will have to be repaired.

And the saw in exchange for the tech tree, use it carefully, casually for a year or two.

In the end, out of selfishness, Xu Yue exchanged one energy fruit for five boxes, exchanged four hundred boxes of instant noodles, and spent the last eighty energy fruits.

According to a box of 30 packs, a person eats three packs a day, 400 boxes of instant noodles, and she can eat it alone for 11 years!

Seeing the last trace of red light disappear on the technology tree, Xu Yue finally left the research room with satisfaction.

The exchanged materials are still in the research room, and they are packed in a space compression box - Xu Yue and the technology tree have an additional business, and an energy fruit rents a space compression box for one day.

Therefore, she had to quickly find a warehouse and unload the exchanged materials.

In particular, the 400 boxes of instant noodles can't fit in a small research room.

After unloading the tools, seeds, and most of the instant noodles from the research room, Xu Yue asked people to inform the three brothers and Zhao Yu's family, planning to invite them to a meal.

"The chief invited our family to dinner?" Zhao Yu couldn't believe it and asked the soldiers of the Xu family army who came to inform him.

Are you sure you didn't just invite him?

The soldier said, "I'm sure that what the leader said is to invite Master Zhao and your family to come over for dinner." ”

"Why?" Zhao Yu asked tentatively, "But is there any happy event?" ”

The soldier shook his head, indicating that he was only responsible for informing and did not know anything else.

Zhao Yu sent people to the gate and went to find his wife at home full of doubts.

Since Xu Jiajun entered the city, he has been idle at home and lying flat.

As soon as this man lies down, he will find that life is much better than he imagined.

Although the Zhuangzi in his hands were taken away, he also compensated him with a lot of chips, plus the original family background, he would not worry about eating and drinking for the rest of his life.

The total assets have indeed shrunk seriously, but everyone has saved their lives, the people in the city still respect him very much, and the face that Xu Jiajun should give is not lost at all.

Now the eldest son in the family is doing well and has found a new errand in the Xu family's army.

As for the disciples who followed him in the past, they were all recommended by him to Chief Xu, and they were rearranged for them to be suitable for them.

As for himself, he cultivated the Tao and began to think about the words that Xu Yue had said, wanting to find some clues about another world from them.

Occasionally, Xu Jiajun came to ask him to do a mediation, and his small life was quite fulfilling.

However, in the eyes of Mrs. Zhao Yu, all this means that her husband fell from the high platform overnight, and he couldn't accept the reality for a while, so he chose to escape from the world.

But the friendship between their husband and wife for decades will never change because of this momentary frustration.

Mrs. Zhao still takes care of her husband's diet and daily life all the time, and cooperates with her husband when she has time, talking about Taoism and the philosophy that Xu Jiajun said.

On the contrary, the relationship between husband and wife is closer than before.

"Sir."

There was a soft call from the maid outside the door, and the corners of Mrs. Zhao's mouth, who was learning pinyin with her eldest daughter-in-law in the house, immediately rose.

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