I Came Back from a Million Years Ago

One day in 2019, a large spacecraft from the Human Federation a million years ago stayed in the sky above the earth! Zhao Xiaofeng, who was on a human federal starry space exploration mission, encountered time and space turbulence and returned to Earth, only to find that it was millions of years later! The notorious interstellar predators have reached the closest neighbor of the solar system - the Nanmen Galaxy. Zhao Xiaofeng ended the era of nations on earth, gathered the power of all mankind, and began to climb the technology tree! The sacrifices of countless human heroes gave mankind a glimmer of hope to escape from the isolated island in the universe! Humanity on earth begins to march towards the vast and endless galaxy! Important note, this book is a hard science fiction novel! No ink, no hydrography, fast plot, welcome to taste it! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.