I Became the Imperial Preceptor in Ancient Times with an Agricultural System

[A seemingly aloof heroine who's actually a chatterbox in her own head x a loyal, devoted wolf-dog hero from a foreign tribe] When Jiang Yu transmigrates, she not only gets bound to an agricultural System, but also lands right on the altar where the emperor is praying to Heaven for rain. To make matters worse, the System requires her to earn enough reputation points before she can go home. With no other choice, Jiang Yu pretends to be a fortune-teller, claiming she's an immortal who descended to the mortal world for a trial. Don't believe her? Fine. Jiang Yu opens the weather observation section of her agricultural System and calculates that rain will surely come in three days, easing the drought. Three days later, the long-awaited downpour finally ends the drought that has plagued the emperor. Then she opens the section of the System that tests soil quality, waves her hand, and points to a spot, ordering them to start digging. Everyone watches as Jiang Yu uncovers one salt, iron, and gold mine after another. Next, everyone sees her produce one high-yield crop after another as if by magic. The harvest per acre multiplies several times over, leaving the court officials dumbfounded. Jiang Yu: I want every place within sight covered with crops, so no one ever goes hungry again. The emperor and his ministers: Yes, yes, you're right about everything. Anyone who dares say you're not a celestial maiden will have to answer to us. * Di Luo is of mixed heritage, and has been discriminated against since childhood. When he is being whipped by human traffickers and thinks he's about to die, he unexpectedly meets the most important person in his life. By sheer luck, he becomes her bodyguard. She is the purest, most untouchable goddess in his heart, while he is lowly as dust. All he hopes for is to stay by her side. [Reader Advisory] * The heroine never blows her cover. * The romance is minimal, with the story focused mainly on the plot. Theme: Self-reliance and strength