Little Widow's Making Money

A doctor of science in the 21st century actually traveled to ancient times. Her husband and eldest son died in the war, and there were three children to be fed. Wang Xiaoxiao relied on space to thrive in ancient times, and each of the three children was more promising than the last. The second son became the youngest prime minister in the dynasty, the third son became a feared general, and even the youngest son became the richest man.