Some things have gone beyond his understanding, beyond the scope of science. Maybe people can only think about them, but they have become reality here.

for example, the beautiful flowers on the street, which you can't imagine, are all automatic equipment. Every day, they will automatically change according to the change of sunlight, the color of flowers, and the amount of photosynthesis. And these flowers, will not wither, with the automatic street lights.

there are also underground spaces under the city. Those pipelines can be combined at will. These modern high-tech civilizations are unimaginable in the world of immortality.

even after one or two thousand years, the number of immortals...