Xinghai Changdu

In 2058, 18-year-old trainee observer Lu Yuanzhou discovered a ray of light in the sky survey data that no one was looking at. It's called Night Guest. A wandering black hole will pass by the Kuiper Belt ninety years later and then leave - it will not hit the Earth, it will just pass by. But humans can no longer pretend not to see it. This is a novel about bookkeeping. The universe doesn't accept the blame, so someone has to remember: who left, who didn't make it, who half-said and then never finished. Lu Yuanzhou never saved anyone. He just promised that no one would know about these things. From the solar system to Laniakea, from the first ark to the first alien cemetery, Billions of years, generations, Humanity has come so far that someone must be responsible for remembering why we set out. (Sufficient manuscripts are available and will be updated daily.)