Earth's Heartbeat

She heard the heartbeat of the earth and the countdown to the destruction of civilization. Physicist Chen captured a set of frighteningly regular gravitational wave signals from the messy data. The source points to the depths of the Antarctic ice sheet. The waveform is not a natural creation, and its encryption method retains the characteristics of World War II Germany. She is the first person in the world who understands this "heartbeat". She calculated that this was a Nazi heritage base that had been dormant for eighty years and was being activated. Its final instruction was to build an everything-devouring "black hole shrine" in Earth orbit. When she tried to warn the world, her data was overwritten, her reports dismissed, and her identity discredited. Immediately afterwards, a precise, professional and traceless pursuit quietly came. She understood that what she triggered was not an academic controversy, but an ultimate defense program that had been hidden for more than half a century. Now, she's the last hole the program has to clear. Facing an ancient ghost armed to the teeth with science, the only thing Chen Aili can rely on is the weapon she used to discover the truth in the first place - those laws of physics that make the world sneer. This is a silent scientific war, to prevent a doomsday sacrament dedicated to darkness...