Transformed into a mother of four children: Eating meat every meal during a famine

With amazing medical skills, she can raise children and start a small business when she is free. Her life is so wonderful. Before she knew it, four children grew up, each one more powerful than the other. The little business she started made the surrounding area the richest place in the world! ... She is a doctor of medicine from 2311. Because of a time travel machine error, she was forced to go to ancient times to become the mother of four children. There is no rice at home, and the children are crying with hunger? It doesn't matter, she can make white flour buns with her bare hands. The sisters-in-law come to the house to make trouble? The evil mother-in-law is partial and doesn't care? It doesn't matter, she can be more ruthless than them. The bachelor next door wants to hit her? Come on...