From Brothel to Prince's Manor: My Road to Revenge

Lin Yue, a modern-day homebody, wakes up to find herself in an unfamiliar ancient world. She’s become a lowly errand boy at the brothel Drunken Spring House, and has to disguise herself as a man for convenience. Soon after arriving in the past, she discovers a mysterious System in her mind. Completing its missions earns her all kinds of rewards, from business know-how to rare treasures. And so begins her path to riches!