C1881 Sneaking into a large prison

The light from the Eternal Day disappeared and the endless starry sky entered the dark world. There was light, but it was very weak. Far off in the distance, the stars were twinkling, however there were some beams of light that had flown for tens of thousands of years, perhaps even millions of years before flying here.

How big was the universe?

No one could give a definite answer.

Lan Yue