After the Moon Landing

When Han Xu's crew returns from the moon's dark side, Country Z transforms overnight into a technological superpower. Aircraft carriers, space elevators, fusion engines—impossible breakthroughs appear within months. As global powers demand answers, Country Z's cryptic response sends shockwaves through the international community: "Believe us and you'll be fooled; don't believe us and we can mass-produce it." What did they discover on the lunar surface that changed everything?