Modern agricultural youth Lin Zhao time-travels into an ancient novel. Starting out destitute, freezing, and starving, he also binds with a contrast system sprite—its exterior is a five-year-old cute baby with hair buns and butterfly wings, while its interior is sharp-tongued and loves playing tricks, offering generous rewards but humiliating punishments that cause social death. Using gypsum to coagulate brine, he revitalizes a tofu stall, gets to know Su Qing, and unlocks the voice-command-obedient, high-combat-power "Doctor Donkey". Entering the saline-alkali land of the southern city, he sprouts crops in three days to slap the faces of powerful tycoons, smashes the private salt conspiracy, stands up fiercely against high-ranking capital officials, and applies modern agricultural knowledge to deliver dimensional strikes. From a street-side tofu stall to thousands of acres of fertile land, Lin Zhao and his partners make a counter-attack all the way, laying out agricultural commerce and water transport, and forging a business dao legend from a bottom-layer scholar to the wealthiest person in the world.