Li Kai accidentally discovered a way to the Three Kingdoms period. During this period, the price of food could reach thousands of times the usual level, so an unusual road to wealth was opened. Li Kai directly sold modern grain to the Three Kingdoms to make money, and soon became the largest grain supplier in the Three Kingdoms, doing business back and forth between Cao Cao, Liu Bei and Sun Quan.
Cao Cao: "Mr. Li, I am short of food here..."
Li Kai: "Ten million is needed!"
...
Sun Quan: "We attacked Hefei because we were short of food and grass. Look, Mr. Li..."
Li Kai: "Would you like Lao Ganma to mix rice? It only costs 10 million!"
...
Zhuge Liang: "The Northern Expedition has just won its first victory, but there is insufficient food..."
Li Kai: "I have 1,000,000 servings of Kung Pao Chicken Rice..."
...
Li Kai, who was selling grain everywhere, even helped the prime minister to unify the three countries in the end. He went north to the Arctic Circle, went south to the Philippines and Australia to cultivate wasteland, went west to do business with Western Europe, and went east across the Pacific...