Which of the main characters in the novels were 11-13 years old and very powerful and rich?

I recommend "The Thieving Chef" and "The Farmer's Chef's First Growth". The protagonists of these two novels were both 13-year-old girls. They had amazing culinary skills and business acumen, and they were able to lead their families to wealth. They were very powerful. At the same time, their stories were also filled with time-travel and plots of ancient business and farming. It was very worth watching. I hope you like my recommendation. Muah ~