In 2049, Beijing, the lingering heat of the centenary celebrations of the founding of the People's Republic of China has not yet dissipated, and the holographic projections on both sides of Chang'an Street are still playing a loop of the centenary journey. But three hundred meters underground in the city, in the "Star Dome" laboratory at the 749 Bureau headquarters, the atmosphere was as solemn as solid lead. This is the country's top secret department. It claims to be a "special phenomenon research center", but in fact it has been secretly tracking the national destiny since the early days of the founding of the People's Republic of China, exploring historical nodes and time and space anomalies that cannot be explained by conventional science. At this moment, on the circular platform in the center of the laboratory, a silver-gray streamlined vehicle was floating quietly, with blue quantum light flowing around it - this was the "Retrograde" space-time shuttle, the craziest technological crystallization in the history of human civilization. Relying on the theory of quantum entanglement and space-time bubbles, it abruptly tore a rift leading to the past in the three-dimensional space. "Lin Che, codenamed 'Skywalker', final execution authority confirmed." Cold electronic synthesized sounds echoed in the laboratory, and a tall figure slowly turned around in front of the main console.
