He Zijin, a modern agricultural graduate student with a gentle and sensitive personality, traveled to another world called the Yan Dynasty due to an accident. The land here is barren and the people are hungry, but he was framed by his enemies and exiled to the most barren northwest border - the ancient domain. He was penniless, surrounded by enemies, and there was also a local powerful man who was eyeing him and wanted to kill him completely. But He Zijin had a golden finger - the "Farming Manual" that appeared in his mind allowed him to use modern knowledge to transform ancient agriculture. From scratch, he planted the first seed of hope in the ancient domain. When he used lime to improve the saline-alkali land, used crop rotation technology to turn wasteland into fertile land, and used greenhouse technology to harvest vegetables in the cold winter, the pattern of the entire ancient domain began to change. Malicious rival Zhou Yutang, the local grain merchant overlord, regards He Zijin as a thorn in his side. He monopolized food prices, incited the people, bribed the government, and even burned farmland and poisoned well water. He did everything he could. But He Zijin endured the humiliation on the surface, but secretly used modern agricultural knowledge to fight back again and again: hybrid rice increased production, diversion canal irrigation, and retting technology turned waste into treasure. From a small village, to a county, and then to the entire ancient county, He Zijin used modern knowledge to subvert the world's agricultural pattern step by step. And a greater crisis is quietly approaching from the capital...