I Was a Eunuch in the Qing Dynasty

Shi Yuheng, a modern electrician, traveled to the Qing Dynasty and became a young eunuch, and unexpectedly awakened to the "system"! The grand master's force in the left hand, the addition of the system in the right hand, and the data-based strategy of conquering the harem. From a humble slave to the uncrowned king with overwhelming power, I, Eunuch Shi, have the final say in the harem of the Qing Dynasty!