Take Tong Yuan as an example: the first price of Tong Yuan shipping outside the province is1one kilogram of 2 yuan, and the second price is 6 yuan. They are all in kilograms, and less than one kilogram is calculated at the price of one kilogram. For example, 10 kg of goods. 9 kilograms of continuous weight multiplied by 6 equals 54 yuan. Plus 12, the head weight is the freight of 66 yuan, so it can be calculated according to this method.