"System"

"That was our civilization's most glorious era," Zero told Meng Chao.

"With the Creation Engine, our civilization jumped from one galaxy to another, and we expanded from one end to the other. In just a few million years, we expanded to most of the star zones in the known universe, and we gained tens of thousands of habitable planets. 

"The uninhabitable planets were once cold, dark, and dead. But following the meteorite impact, reconstruction of their crust, and replication of ecosystems, they became full of vitality and hope."

However, good times did not last long.

As the scale of a civilization grew larger, the internal conflicts and problems that erupted also increased.

The biggest problem was space and time.

Any life, empire, or civilization itself, no matter how powerful and advanced, had a limit.