In South China, nearly a thousand miles from the civil war areas, rice rose from eighteen million dollars to thirty-six million dollars a picul within a few days.
Last year they bought unhusked rice from the peasants in Wanan and Taiho Counties at fifty cents a picul and sold it in Kanchow for four yuan, making a sevenfold profit.
Hence a wise general makes a point of foraging on the enemy. One cartload of the enemy's provisions is equivalent to twenty of one's own, and likewise a single picul of his provender is equivalent to twenty from one's own store.