This book has no system, no heroine, and prefers traditional hard science fiction.
In the 1970s, the dark forest theory was deeply rooted in the hearts of the people, and the continuous receipt of unknown electromagnetic wave signals gradually strengthened this theory.
Humanity split into the Stars and Seas faction and the Earth Home faction, and began endless internal strife for their own claims.
However, real alien forces are invading the depths of everyone's hearts...
The civilian heroes grew up in the chaos and led all mankind to the stars and the sea.
