Shen Zhixia, a doctor of both geology and agriculture, opened his eyes and became a little orphan who was about to starve to death on the way to escape from the desert in ancient times. Good news: He finally survived and was taken in by a kind village. Bad news: This village is called "Qianganli" and is located in the northwest, which has suffered nine droughts for ten years. The whole village is worried about the last puddle of mud and is preparing to sell their children and daughters to escape the famine. Shen Zhixia: "..." It matched up professionally, but not completely. Seeing the villagers praying to gods and praying to Buddha, crying in despair at the cracked land, Shen Zhixia silently took out the knowledge engraved in the DNA of his previous life. "Auntie, dig a well in this direction. There is a phreatic layer below." "Li Zheng, that kind of crop called sweet potato is drought-resistant and high-yielding. Let's try it?" "Folks, instead of waiting to starve to death, why not work with me on infrastructure construction! Build canals and reservoirs, and the desert can be turned into an oasis!" At first, the villagers looked at this thin girl with disbelief on their faces: "What does a yellow-haired girl know?" "Dig a well? The Dragon Prince doesn't say anything, even digging through the core of the earth is useless!" "Planting that thing? I've never heard of it, don't plant the land to death!" But when the clear well water gushes out, when drought-resistant crops usher in a bumper harvest in autumn, when the once wasteland grows pleasant green... Everyone feels really fragrant. "Girl Shen, no, Mr. Shen! You said to go east, but we will never go west!" "Sir, please teach us another way to increase production!" Shen Zhixia looked at the increasingly prosperous village and the satisfied smiles on the faces of the villagers, and wiped her sweat. Well, knowledge changes destiny, and the ancients are honest.