No, Smith thinks that although natural disasters will reduce the food in the market, no natural disaster can make the market without food. If the long-term rainstorm reduces the grain yield in the lowlands, the crops in the highlands will be better irrigated and the yield may increase. Once there is a shortage of food in places where grain production is reduced, the demand for food will rise and the price of food will also rise. People will reduce their food consumption rate according to the price, hoping to save the food on the market through difficult times.