Saving the World Starts with a Spaceship

Where did the author's spaceship go?

I once saw a theme about picking up an alien host. Then I discovered that this host has that kind of interstellar network, and then what about this host? There was not much energy left, so the protagonist went to find a cousin who ran a mining farm and started mining with that kind of mining machine. Then it is dedicated to this host. After charging, the host still has that kind of permission. Then the protagonist has the kind of black account authority. Then after the protagonist charges the host, he can travel through time. The protagonist only met once in time. That is to say, the civilization at that time was very huge, and then it simply disappeared. Then I traveled to that planet and discovered that there was that remnant. The gravity of the planet was different, and the people on that planet regarded him as a god. Then there was a girl among the immigrants who was his father or grandfather, a priest. In fact, some of the immigrants are ordinary people and some are interstellar nobles. Then they had access to that host and they found one on the planet. Things left over, but those immigrants have forgotten the technology they once mastered, and regard these so-called technologies as gods. Moreover, I haven't seen anything similar to cultivating immortals even once in time. The priority civilization is actually technology, not immortality. I enjoyed reading this book at first, but then I didn't know where it was going.