Publisher's Synopsis
At the flea market, the four children wondered about the old things on their booth: what did they think at the beginning, why did they buy these things? The consumption professor of the market appeared, took the children to review various consumption scenarios, and revealed the secrets of the consumption devils and the marketing routines of the merchants one by one: Why are the prices of commodities all at a fraction? What is important about the placement of goods in the supermarket? Why are toys different for boys and girls? Are discounted things necessarily better? What is hunger marketing?
