Lu Mingyu, a peasant student, became the legitimate daughter of Dayan Tusi Mansion. His father died early, and his mother took charge of her husband's duties and assumed great power. However, the next day, she discovered that this place was located on the border, with little information, poverty and backwardness. So, she hesitated and personally visited and investigated, intending to help everyone get rid of poverty and become rich. Unexpectedly, this lady chieftain was about to lead the people to work in agriculture, but before they went to the fields for a few days, everyone was fighting in private and gambling, showing no intention of working hard at all. Not only that, the enemy army was watching with eager eyes. Seeing that the new chieftain of the Lu family was just a yellow-haired girl, they wanted to take the opportunity to annex this great place. Seeing this situation, Lu Mingyu had to take up arms, regulate discipline internally, and resist the enemy externally. Unexpectedly, as she continued to do this, people looked at her with more and more respect. At the same time, beyond the border, the emperor in the capital also noticed this young female chieftain.