Jobs is the support of fine products, and marketing means clear the obstacles. The so-called good things sell at a good price. Shi Yuzhu sold boiled water at a good price through advertisements. Market aunt is a low-end product, with low price, less investment and less income, completely resigned. Jobs is making products, Shi Yuzhu is doing business, and the marketing lady is living. Jobs is a product concept, Shi Yuzhu is a market concept, and aunts depend on the weather for food. Jobs guided the development of the market through a product. Shi Yuzhu made a product that caters to the market. Aunt, no matter what your market is like or your cabbage is like, I always want to live.