Liang Zhuang is a master grower of the Empire.
After she dies, she opens her eyes to find herself the young daughter of a border general.
Her father is covered in wrinkles, her mother's hair has gone white at the temples, the soldiers at the frontier lack food and clothing, the people are weak and sickly, and the northern nomads are watching them like hawks.
Liang Zhuang: "?"
Time to grow cotton, rice, chili peppers, radishes, and okra!
Oh, and huge watermelons!
A year later, every border resident is as rich as a nation. The soldiers are strong and powerful, the horses are fat and healthy, and the city walls are impregnable.
The people of the frontier: "Zhuangzhuang is mighty! We're so grateful to Zhuangzhuang!"
The northern nomads: "Our tribe is willing to make the divine maiden Zhuangzhuang our new chanyu. Please accept!"
The Xirong tribes: "When will the neighboring emperor come conquer us? Boo-hoo, we want to join you right away!"
Officials and the emperor in the capital, a thousand miles away: "...?"
Theme: Every grain is hard-won.