Su Qingci entered the palace. In order to raise life-saving money for her seriously ill brother, she signed a life-and-death contract and became the lowest-level sweeping maid in the cold palace. The good news is that not only is the cold palace quiet, there are no concubines vying for favor, so there is no need to worry about being involved in a palace fight and not surviving the first episode. The bad news is that the work is high but the pay is low, the floor is swept eight times a day, there is not enough food to eat, and the housekeeper has to wear small shoes. She thought that her hands would be broken in the cold palace in this life, until one day, her broken broom poked open the secret door under the dry well - a royal library of the former dynasty that had been sealed for a hundred years appeared in front of her! No system, no space, no almighty cheat? It doesn't matter, knowledge is the biggest cheat! While others met the emperor by chance in the imperial garden, she was memorizing national policies under a dry well; while others were scheming in the Chuxiu Palace, she was burning the midnight oil to write the "Previous Dynasty's Real Questions in 1953"; while others were weeping over the honor and disgrace of her lord's son, she had thoroughly devoured the farmland water conservancy and military tactics of past dynasties! ✍ A few years later, the imperial court was in turmoil, and the scientific examination system was restructured to recruit talents from all over the world. In front of the Jinluan Hall, a thin but straight-backed "young man" talked eloquently, criticizing the current shortcomings from river management to border military supplies, which amazed everyone. The young men from aristocratic families who originally wanted to show off their talents in the scientific examination were all dumbfounded: "Which academy is this brother a hidden genius from?!" The eyes of the abandoned concubines in the Leng Palace who ate melon seeds every day dropped to the ground: "Isn't this the girl Qing Ci who helps us empty the toilet every day?!" With countless red-eyed nights, Su Qingci used a pen to go from the lowest slave to the slave girl.