A modern female financial executive traveled through time and became the abandoned concubine in the cold palace in "The Legend of Zhen Huan". She used the business knowledge of later generations and established a complete gray economic system in the deep palace with "secondary distribution of tributes + harem intelligence arbitrage" as the starting point. She does not participate in any palace fights and only acts as a "supplier" for everyone. No matter whether it's a concubine, a eunuch or an official of the imperial court, anyone who wants to cause trouble has to come to her to buy props, borrow people, or exchange information. She used the aromatherapy shop to launder money, used the cold palace cellar to build a treasury, and used the spare time in the imperial kitchen to do futures delivery. Finally, when the emperor discovered that the economic lifeline of the entire harem was under her control, she had already drafted the "Forbidden City Commercial Reform Draft" and slapped it on the dragon case: "Sign, or let all civil and military officials go on strike before you go to court."