Just like that, time passed day by day.

Three months later, the Sky City was finally out of the dangerous volcanic gas area, but for safety reasons, the city flew for another month and finally found a lake to sit on.

That's right, humans have returned to the mainland again. This time the journey is really full of twists and turns, going round and round, and the final destination is nowhere in sight.

This time, the losses were really heavy. 300,000 livestock died unnaturally, and hundreds of people were poisoned alive by the old, the weak, the sick and the disabled. When Lu Yuan heard the news, he almost lost his temper - well, actually he did too

certain responsibilities.

People never expected that the scale of the volcanic eruption would be so large, and they thought it would be safe if they were separated by hundreds of kilometers.

The volcanic ash in the sky blocked the sky and may have affected a large area.

The decrease in sunlight and the sharp drop in temperature will lead to possible food harvest failures for many years to come.

In the winter of that year, another severe cold disaster occurred, with the temperature dropping to minus 50 degrees Celsius, which brought huge difficulties to human production.

Later generations of humans will call these years the Ice and Steam Age.

The heavy snow mixed with volcanic ash dyed the whole city white, and the green mountains were covered in silver, making it especially cold.

"The volcanic ash in the sky may float for several years, and the future will be like this winter."

The old cat came to the Tree of Life and reported some of the current situation: "The current main work is to build a heating project. The weather is really too cold. Even the children in the school can't stand the cold."

"We need to install floor heating in the classroom, or get some climate control glyphs."

"Economic development has also stopped, and now it has transformed into a state of all-round survival."

"Oh, that's indeed what it should be." Lu Yuan, who had turned into the Tree of Life, looked at the gray sky, "This time it really got serious. The world is really fragile."

The old cat glanced at the big tree: "The members of the upper council are suggesting that we bring you back as soon as possible to prevent you from dying outside."

"Most of the volcanoes should have stopped now, and only a few are still emitting magma. The risk should be considered controllable."

Except for a few close associates, Lu Yuan did not inform anyone that he had returned to the city.

Because the ability to resurrect is too powerful, it is not a matter of scarcity but of inequality. Who doesn’t want to be resurrected?

In order to avoid unnecessary trouble, it is better to conceal the news.

Of course, even if Lu Yuan is away, Sky City is still operating normally. As long as he occasionally reveals the news that "he is still alive", there will be no big problem.

"Just wait a few more years, and just say that I have dug up some good treasures. Don't worry about it. When the human body grows again, it won't be too late for you to pick me up."

The old cat asked again: "How is your stone body...?"

"Not much progress, my little treasury."

In three months, the energy of those "Ley Vein Crystals" had long been exhausted, and the energy of the Tree of Life replaced the original magma heat.

More than half of the Chaos Essence Stone was still red, bursting out with heat like the sun, while the other half turned into emerald green.

A small vine, like a watermelon vine, is connected with a steady stream of energy.

But Lu Yuan still doesn't know when he can turn it into a "fruit of life."

The Chaos Essence Stone is like a bottomless pit that can be swallowed no matter how much is poured into it.

"Let's cultivate it for now. Even if it fails, it can be converted into a large amount of materials."

"Do you have enough aura in your hand?"

"The output of the Tree of Life is actually not enough, but the conch will give me part of the output of the poppy tree. Three to four hundred souls a year, I can barely make ends meet."

"In other words, there is no way to sponsor humans in the short term."

Lao Mao sighed, an investment of three to four hundred a year was something that a wealthy businessman like Lu Yuan with abundant private funds could afford.

"Humanity must first survive this wave of disasters..."

The old cat jumped a few times on the snow, leaving a series of plum blossom-like footprints.

The heavy snow in the sky is accumulating thicker and thicker, and the workers are busy nervously. After all, this kind of severe cold weather is the first of its kind. Many structures must be repaired urgently if they are frozen and rotten, and some heating equipment is also being urgently needed.

In production.

This kind of bad weather may be the norm in the middle of the era. A normal city in the sky must have the ability to withstand severe natural disasters. Otherwise, a storm or a heavy snow will kill a lot of people, and there will be no way to travel around.

mainland?

From this perspective, there are still many places for humans to check and fill in the gaps.

Children are always the most optimistic. When the weather is very cold, they dress up like little chubby little ones, build snowmen on the snow, and even start playing with ice sculptures.

"Optimism is better than pessimism. This disaster will always be overcome."

Lu Yuan actually couldn't help much.

All he has to do is take care of the birds in the tree.

The adaptability of the native creatures in Pangea is always a level higher than that of humans. They hibernate when they should hibernate and escape when they should escape.

Since the city reached the edge of the lake, some of the birds have flown away, but there are still hundreds of thousands of them, willing to stay in the green mountains.

Human beings will naturally not miss the wealth that comes from the sky. They feed them regularly every day. With only a small amount of grains, they can harvest a large number of mutated bird eggs. In the current environment, it can be considered a considerable income.

…

[My name is Lu Tiantian, and on this day, we ushered in the cruel ice and steam era. 】

[The climate is so cold, the howling cold wind can freeze people's fingers, and the power of nuclear power plants is actually not enough. Most of the electricity must be used for solar lamps, farms, hospitals, and heating of children.]

[To be honest, this is the first time our generation has encountered such a big crisis.]

[The first generation is getting older, and we, the second generation... have become the elders. 】

【Elder, what a heavy word.】

[We have no enemies, or in other words, the enemy is the invincible nature. The only thing we can do is to pray that nature can recover soon.]

[We have also realized that human beings actually still have many, many areas where we can check and fill in the gaps. 】

[Due to the lack of energy, the upper-level parliament passed several emergency resolutions, and most of the animals will be slaughtered and used to make warm clothes.]

[For experts above level three, heating at night will actually be reduced. 】

[In addition, the current production efficiency of extraordinary resources has been reduced to the point that the only inventory must be supplied to the children. The adults are all downgraded to D level, and the children are to C level. 】

[These two resolutions are somewhat against human nature, but they passed miraculously. I originally thought of using some means, but it seems that everyone's ideological consciousness is higher than I thought... I hope we can get through this as soon as possible.

.]

"Brother Tian, ​​hurry up and go out to feed the birds!" A male voice came from the door.

"Coming, coming!" Lu Tiantian put down the cold pen and added hastily at the end.

【I like human civilization and I want to protect everything here!】

After all these years, he is still so good.

Now one of our parents is missing, but the education system still needs to be maintained. We can only allow the second generation of outstanding young people to find time to take care of their children.

The happiest thing for children is to go to the green mountain and feed the birds.

Conch and more than a hundred second-generation young people took more than a thousand children to the mountains to experience nature.

Now the mountains are covered in white snow, the whole world is really covered in silver, and the lake is covered with thick ice, which can even drive a tank. Only a small area near the Tree of Life exudes subtle vitality.

Miss Conch smiled like a flower: "Children, say hello to Grandpa Dashu, this is Dad Lu's pet."

"Hello Grandpa Dashu!!"

Lu Yuan: ...(Then he tried to open the branches and let the children breathe in some life energy.)

The children waved their hands and scattered the grains, and the birds flew over to compete for the food.

Of course, these are small, non-aggressive birds. The real big birds have long been tamed by animal lovers and will not appear here.

"Brother Tian, ​​when will the weather get warmer?" asked a teenage girl, wrapped up like a giant panda.

"It should take a few more years." Lu Tiantian sighed.

"I keep enduring it, and I seem to be used to it." A companion next to him said, "These days, you can feel happy even if you go home and soak your feet."

"Where's Dad Lu?"

"Went to fight monsters."

"Brother Tian, ​​when will the large puppet be ready? When will the nuclear fusion be ready?" asked a chubby boy with good grades.

"You are quite concerned. When you grow up, you can do these projects yourself!" Lu Tiantian said with a smile.

"I'm learning NS equations."

"That... is quite difficult." Lu Tiantian patted the little chubby guy on the head.

Now there are several more key research and development technologies in the campus science and technology museum.

Humanoid puppets and nuclear fusion are definitely top priorities. These are the technologies of a third-level civilization, so good!

"Beep" Suddenly, Lu Tiantian's cell phone rang. He glanced at it subconsciously and suddenly froze on the spot.

I saw a line of text displayed on the screen: [At 3:33:19 in the afternoon, a gamma ray burst was detected from the extremely distant east direction, lasting 0.3 seconds, and the energy released is unknown. ]
To be continued...