From the start, the protagonist's soul transmigrates into a fake eunuch, caught between the threat of execution and the danger of serving the Empress. Using the System to create perfumes and skincare products, he earns the Empress's trust and manages to stay alive while keeping his secret as a “fake eunuch.” In the middle of the story, serving as the Empress's personal attendant, he builds an intelligence network and small workshops in the imperial harem. He uses modern knowledge to solve a palace poisoning case, helps the Empress eliminate political enemies, and secretly builds up his own power. At the climax, the protagonist develops black powder, powerful crossbows, and other weapons far ahead of their time, helping the Empress secure her throne amid internal and external threats and completely overthrow the old aristocratic faction led by the Chancellor. In the end, he becomes the all-powerful “Nine-Thousand-Year-Old,” and the Empress keeps an empty harem for his sake. As the power behind the throne, he ushers Great Xia into an industrial revolution and a campaign for global supremacy.
