This science fiction novel was called " Interstellar Rescue " by Liu Cixin. In the novel, aliens descended from interstellar space and provided technology and resources to help mankind develop rapidly. However, in fact, these aliens were sent here by higher-level aliens because they believed that the resources and environment of the earth could not withstand their invasion and rule. With the arrival of aliens, humans began to face a series of dangers and challenges, including alien weapons attacks, internal political struggles, and resource struggles. In the end, mankind fell into a predicament. In order to protect the earth and their homeland, mankind had to fight a decisive battle with the aliens and was eventually destroyed by the aliens. The plot and ending of the novel were full of science fiction elements and pessimism, but it also reflected the courage and tenacity of human beings in the face of the unknown and challenges.