July 26, cloudy.
The defensive battle was over. I continued sorting through the intelligence I'd gotten from the pilot last time.
After the Great Extinction (the disappearance of civilization and spiritual energy hundreds of thousands of years ago, which the Zhutian Civilization called the Great Extinction), the Zhutian Civilization survived thanks to being so far from the other civilizations.
That was why I'd doubted the Zhutian Civilization's claim, mentioned in my previous diary entry, that it was one of the most powerful civilizations. Its location was like some remote frontier, overlooked by everyone.
The civilizations of the original universe had relied on "spiritual power" as their source of energy, and the Zhutian Civilization was no exception.
But after spiritual power disappeared, the Zhutian Civilization had no choice but to start researching other energy sources, such as steam, electricity, and solar power, eventually reaching the level of spacefaring technology.
During one space exploration mission, the Zhutian Civilization discovered another life-bearing planet, even more remote than its own. The planet had no intelligent life, only some beasts, but those beasts were terrifyingly powerful. The exploration team managed to send back a report on the planet only moments before they died.
After a thousand years of war, the Zhutian Civilization finally defeated the beasts on that life-bearing planet and discovered a mineral called "Supreme Spirit Stones."
Supreme Spirit Stones contained abundant "spiritual energy," but the Zhutian Civilization had lost the knowledge of how to use spiritual energy over the course of history, so it could only start researching it from scratch.
With the help of the spirit stone mines, they developed biotechnology.
In the battle on the planet with the spirit stone mines, the Zhutian Civilization realized it wasn't the only life in the universe. To secure its position as hegemon and find