Li Yao was greatly touched. A great man whose name had been passed on for ten thousand years indeed deserved his fame!
But he was still baffled by something. "Why was an observatory that was meant to study the universe built more than ten thousand meters below the ground? Wouldn't it save a lot of money and effort if the site were built on the surface?"
Bai Xinghe smiled and said, "It's simple. This is not a simple observatory that studies the three-dimensional universe, but one that can study the four-dimensional universe directly!"
Li Yao's widened in astonishment. "What!"
"The universe is too vast," Bai Xinghe explained. "For normal observatories, however advanced their technology is, it is unlikely that their observation can surpass the speed of light. The celestial phenomena they observed might actually have taken place billions of years ago.
