German economist Engel found through a large number of surveys that the difference between the poor and the rich in food expenditure is not large, and the real difference is in luxury expenditure. Therefore, the greater the proportion of food expenditure in the total expenditure of a household, this shows that The poorer the family, however, all levels of Chinese residents regard the purchase of high-end consumer goods represented by household appliances as the first goal of the family's struggle, and after this goal is achieved, the necessary consumption such as improving meals is considered. As a result, the poor and the rich use it The difference in luxury spending is not large. The obvious difference lies in the necessary expenses such as meals. So we can think. ['Engel is a lame economist.', "In our country, the larger the proportion of food expenditure in a family's budget, the richer the family.", 'In the West, the food expenditure of the rich accounts for a larger proportion of the total household expenditure.', 'China should reduce food prices appropriately.']