Start by Selling Roasted Sweet Potatoes in Da Song Dynasty

Traveling through the Song Dynasty, starting with a sack of sweet potatoes, how to reach the peak of life step by step? Jiang Chen: "Roasted sweet potatoes, five cents for two, ten cents for three." Han Shizhong: "Brother Jiang, give me Han Jiajun ten thousand catties of sweet potatoes!" Zhao Gou: "Brother Jiang, how about I trade this royal estate for your sweet potatoes?" Yelu Dashi: "My lord, the hundred acres of sweet potato fields outside the city have been fully cultivated." Duan Heyu: "Boss, I have sown all the 10,000 catties of sweet potatoes." Li Qianshun: "..."