“The geomagnetic field… its most important role is to protect Earth. Earth is suspended in the universe while surrounded by cosmic rays and solar wind. After encountering the geomagnetic field, these things will be deflected into other directions without harming the surface creatures. Thus, in 2020 when the geomagnetic fields disappeared, the entire Earth was directly exposed to solar storms and cosmic rays. The radiation outside was too strong and most of the land was directly blown away by storms. Water disappeared, the atmosphere became thinner, there were droughts, skin diseases, cancer, etc… half of the world died and this became the Desert Age.”

Jin Sen swore. “Fuck.”

“However, the Desert Age ended quickly” Poet laughed and continued, “From the time the geomagnetic changes were discovered in 2020, humans had already proposed countermeasures and this was divided into plans A and B. I searched through a lot of information in the abandoned city to find them.”

Jin Sen’s voice had become respectful. “Say it.”

“Plan A was to build huge magnetic field generators in two special locations in Asia and North America. One would be called the ‘Eastern Magnetic Pole and the other the ‘Western Magnetic Pole.’ The two north-south poles of Earth would be replaced with the east and west magnetic field generators. They would resonant to charged particles in the solar wind to form a new magnetic field that covered the whole world.”

Jin Sen hit his palm a few times. “Fierce.”

“Plan B was to construct large underground cities and shift the focus of human life from the surface to underground, protecting it from rays and solar wind.”

Jin Sen continued to clap. “Okay.”

“In 2040, Plan B was successful and the underground cities opened.”

“In 2043, Plan A was successful and weak magnetic fields covered the planet. The climate no longer deteriorated and organisms no longer died from cosmic radiation. Human technology began to recover and the period between 2040 and 2043 was known as the ‘Dawn Age.’

Speaking up to here, Poet sighed softly. “However, the hardest time for humans had just begun.”

An Zhe’s eyes became wide.

“I know.” This time it was Jin Sen opposite him. “The Catastrophe Age came.”

“Yes,” Poet replied. “Cosmic radiation brought about unknown genetic variations that were terrible.”

“It started out as super bacteria and fungi and viruses were breeding in human cities. They infected everyone without distinction and the cities were full of corpses. Anyone who has visited the ruins in the wilderness would know about this.”

“How did they survive?” An Zhe questioned.

“It was destiny to survive.” Poet explained. “In your genes, if you have immunity to these bacteria then you would survive. If not, you would die. The last remaining people were all those who were immune. Out of the three billion people who survived the Desert Age, only 100 million were left. Nevertheless, this wasn’t the hardest time for humans.”

“And then?”