Lin Ran opened his eyes and found himself on 1960s New York streets, holding future 2020s tech data but becoming a "black household" without identity. He had to use a forged paper to infiltrate NASA, becoming von Braun's "genius Chinese assistant." By day, he secretly hid Hall thruster designs on Saturn V blueprints; by night, he used old telegraph machines in Chinatown basements to solve technical problems for China.

He embedded the "space elevator" concept into Kennedy's moon speech; he left sketches of "quantum communication" in Korolev's notebook... By the 1960s he became NASA director, burning ten percent of America's GDP budget annually, debating fiercely in Congress, gathering elites at global universities, commanding global scientific cooperation. In 2020, after America replicated the Apollo program to return to the Moon, he was imprisoned, facing charges of technological theft with electronic ankle cuffs on Capitol Hill.

After enduring immense hardships to return to China, he built a trust behemoth, constructed a base on Mars, assembled astronauts to depart for Europa, and launched the Titan V transformation plan. In this cross-temporal gamble, he was both the ghost of history and the spark of the future. When Lin Ran suddenly looked back, he found he had already set the entire world ablaze.