The other four underground cities, due to limited resources, could not maximally nurture offspring at present.
However, the G City underground city had no such worries.
Following the official implementation of the "Nuwa Project," a batch of children would be nurtured using artificial wombs every month starting from January of year 344.
Tang Li had also extracted an egg in February and another in March, submitting them for nurturing in the artificial wombs.
Coincidentally, for both of these nurturings, the father matched with her child was Song Pinxuan.
Having spent so much time together, even a block of wood would have understood that Song Pinxuan liked Tang Li.
And Tang Li had long since noticed.
But she did not point it out, nor did she take the initiative to say anything to Song Pinxuan.
Song Pinxuan also did not bring it up, focusing solely on scientific research.
Upon learning of the "coincidence" of these two matches, Tang Li merely raised an eyebrow and said nothing.
Song Pinxuan knew the secret of the X substance in her body, and also possessed technology for the next 30 years.
If this could keep him tied to the G City underground city, she would be very pleased.
As the "Nuwa Project" was implemented, more and more people joined.
Even couples where only one partner's genes were not damaged by the delta particles participated.
Some complemented each other, allowing the partner whose genes were damaged by the delta particles to have children who carried their surname.
Some, however, were simply after the rewards from the G City underground city.
The G City underground city offered a reward of 100积分 for anyone who provided sperm or eggs, and additional supplies upon successful matching and child nurturing.
Furthermore, after their children started working, they would receive a monthly subsidy based on their children's salaries.
This was the most attractive aspect for them.
If a child was successfully nurtured, grew up, and started working, the parents would receive a monthly subsidy of 10积分. For ten children, that would be 100积分 a month, and for twenty children, 200积分.
This was equivalent to their monthly salary.
Moreover, the higher the child's working salary, the higher the subsidy they would receive.
By then, even if they could no longer work, they would still have enough积分 to live on.
Therefore, after the implementation of the "Nuwa Project," the underground city could essentially nurture over 300 children every month.
Besides children nurtured by artificial wombs, there were also naturally conceived pregnancies.
Xu Xinyue, who had been transformed into a bio-robot, was pregnant with He Xiao's child.
The G City underground city also provided care for these pregnant women.
During pregnancy and lactation, they received subsidies even if they did not work.
Furthermore, after the child was born, the G City underground city was responsible for all expenses from childhood to adulthood, and parents would also receive subsidies after their children started working.
However, compared to the rewards for providing eggs, these subsidies and reimbursements were not substantial.
Moreover, one had to endure the ten months of pregnancy and the pain of childbirth.
Therefore, most people chose to provide eggs and have them nurtured by artificial wombs.
In March, a virus finally infiltrated the G City underground city.
Fortunately, this virus was not dangerous. The people in the underground city were all in their prime, and even if infected, they could quickly recover with their own resistance.
Even so, Song Pinxuan and others quickly developed a vaccine and administered it to everyone in the underground city.
In April of year 344, the third extreme cold season ended.
This extreme cold season saw four blizzards in November and December of year 343 and February and March of year 344, with snow depths reaching hundreds of meters.
However, for the G City underground city, it merely entered a state of lockdown, with no impact.
Throughout the entire Z Country, apart from Long City, Jiang City, Shan City, and Hai City, there were no other shelters.
All official shelters and survivor camps had migrated to the vicinity of these four cities.
During the extreme cold season, similar to the first extreme cold season, ice and snow fortresses were constructed from melted snow, allowing survival beneath the snow.
Even the construction progress of underground cities was not significantly affected.
Moreover, the abundant snow provided immense freshwater resources for Jiang City and Hai City.
Although the great drought had ended, the rising sea levels caused freshwater in lakes at altitudes below 50 meters to be mixed with seawater, requiring distillation into freshwater for drinking.
However, the snowfall from the sky was freshwater and could be drunk directly.
During the extreme cold season, Jiang City and Hai City actually accelerated the construction of their underground cities.
When the extreme heat season arrived, the rising sea levels would disrupt their progress in constructing underground cities.
With the skilled use of engineering mechs and the restoration of other electrified tools, the progress of underground city construction became increasingly rapid.
June 21, 344.
In the next month or two, all rain falling globally would be acid rain.
However, human perception of temperature was very comfortable, as were other plants and animals.
In August, affected by the great acid rain and the great plague, some organisms that had been struggling to survive in the cracks mutated.
They did not gain superpowers.
Instead, affected by the great acid rain and the great plague, they became highly toxic.
Concurrently, they began to attack human settlements.
In the past two years, with the restoration of communication, Z Country also began sending out drones to search for other survivors on Earth, and established contact with survivors from M Country and O Country.
However, after the volcanic eruption, the survivor base in M Country was directly annihilated.
Following the outbreak of toxins and the sustained attacks of the great plague, all survivors in O Country perished.
Worldwide, only Z Country survived.
Z Country became the sole survivor on Earth.