Willow Sheffield was divorced. Left with nothing but a desolate estate and 8 copper coins, she didn't shed a tear. With her maid, she gathered limestone, mixed mud, and built a self-flushing latrine. When news spread, even the Marquis's Estate, facing a blockage, paid 100 taels to hire her. From latrines to arch bridges, from a divorced woman to a female Grand Tutor of the Ministry of Works, she used cement and blueprints to silence everyone who looked down on her.