Consumption change: Refers to the consumption model where citizens often shop in each other's cities due to the convenient transportation between the two cities and the different prices. Which of the following belongs to city consumption? ['Beijing Min Xiaowang told reporters: In Beijing, 6 yuan a catty red Fuji apple can be bought for 4 yuan at 10 yuan in Tianjin; 80 yuan per barrel of edible oil in Beijing, 65 yuan for Tianjin.', 'Every time I hear that there is a shopping mall in Zhuhai for promotion, Ms. Li in Shenzhen will rush to go shopping happily. For half a day, the house is full of her booty.', 'Ms. Zhao buys a lot of cosmetics at the airport duty-free shop every time she returns from South Korea, which saves a lot of money than buying the same Korean brand in China.', 'Mr. Huang worked in a city in the south for seven or eight years, seeing the price soaring all the way, ready to sell his own house, and return to his old home in the north with his wife to take care of them.']