The Unkind Universe: the Sagittarius Remnant

She was attacked and fell in an alley on a rainy night, with her cervical cord broken and her life hanging by a thread. He was rushed to a top-secret base. The gravity was abnormal and the star map hung upside down. When the countdown signal from outside the earth begins to beat in front of people's eyes. When the silver "express delivery" from deep space delivers "visitors from outer space" with "green claws" on their faces. Humanity gradually realized that this was not a simple extraterrestrial contact event, but a request for help from a civilization spanning tens of millions of light-years, and a well-designed conspiracy... . The heaven and the earth are not benevolent, and all living things are nothing but cowards; the universe is not benevolent, and all living beings are nothing but mayflies. ---- (Note: Traditional hard-core science fiction is a non-systematic cool article. We know that this kind of eloquent narrative and slow-burning story may not be paid attention to by many people at the beginning. Therefore, I take the opportunity of the "Science Fiction World" essay collection to present it for review by book friends who like traditional science fiction, hard-core science fiction and suspense science fiction. For book friends who like in-depth reading, feel free to click on it, this story will surprise you.)