Hundreds of light-years away, a planet called Okai Civilization was facing an unprecedented great challenge.
This planet was approximately 12.5 times the diameter of Earth, housing nearly 20 billion people. After tens of thousands of years of development, the Okai Civilization's science and technology had reached a second-level civilization standard, and they had built numerous massive modern cities.
Decades ago, a group of cosmic explorers arrived on their planet. Initially, they thought it was just a primitive civilization and thus began their invasion and plundering of the Okai Civilization.
However, to their surprise, the cultivation system of this civilization had developed beyond their scientific technology. This civilization had established a quite complete cultivation system where Cosmic Source Power was known as Battle Qi!
