Accidentally Dressed as the Richest Woman

When she was 3 years old, in the time and space she was in, she was pushed to the ground because of her grandfather's cruelty, and her soul was expelled. Time travel to the 21st century, in the body of a newborn baby. She thought she could live her whole life in this time and space, but she never thought that after she was 28 years old, she would be hit by a car. The soul went back through it again. The time and space she lives in is an imaginary dynasty in history, which is developed and underdeveloped. There is nothing else to eat except oil and salt as condiments. I don't even know how to cook a lot of food, and I don't use soapberry or other soap to wash clothes. So, she used what she learned in the 21st century to slowly become the richest man in the country step by step.