Sea of ​​Stars: Our Warships Cover the Sky and the Sun

If I don't have a hard science fiction book, I'll read it and open one myself. The surface of the planet leads directly to the sea of ​​stars. They arrived in a small boat, and when they returned, the warships covered the sky and the sun. They used steel torrents to fight steadily in the dark forest of the universe. They cooperated when they should, and went extinct when they should. They regarded humans as terrifying erect apes. We call it efficient.