Stories About Palace Maids and Eunuchs Working Hard to Learn Skills and Rise Through the Ranks 求宫女太监努力学习技能上位

Please, no mindless sweet romance based solely on the heroine’s looks. I want a story with no golden finger, or one that isn’t too overpowered. The protagonist should start as a lowly palace maid or eunuch and work their way up, constantly learning new skills, like Wei Yanwan: embroidery, tea-making, sewing clothes, and so on.