The passenger flow in towns and villages is not very large, so it is not ideal to open a shop in rural areas. In the city, a photo is 36 inches square, and the cost of the photo frame is about 100. If you sell photos to customers, you can buy about 200 photos. The cost of a 7-inch photo from 10 to 20 yuan is 1 piece of plastic plus 2 cents. Do the math yourself.