Light Years Boundary

The vast universe is mysterious and unpredictable. "Who am I? Where do I come from? Where am I going?" This is the ultimate proposition of human philosophy put forward by the great ancient Greek thinker and philosopher Plato. For thousands of years, people have been searching for answers, but they have never been able to give them. The universe we live in is itself like a macroscopic "life body". All things and civilizations here are born from its ideas and structures. The solar system is just a tiny "cell" in the universe, even though the radius from its outer Oort cloud to the center is 1 light-year away. Within the package of the Oort cloud, there is only the form of "three-dimensional space + time". It is like a "capsule" that cultivates and protects the civilization of the solar system and prevents malicious intrusion from "other universes". "Time", as a special "medium", only exists within the "capsule" of the solar system, and does not exist outside the Oort cloud... When the higher intelligent life in the universe accidentally entered this "capsule" sealed by time, human civilization encountered unprecedented crises and disasters. How can tiny humans defeat powerful invaders? This is exactly the story this book wants to tell you...