Just ask, by plane. What is the charge for one kilogram if the thing is overweight?

The regulations of different airlines and different routes (domestic or international) are different, but the difference is not big. Taking Air China's domestic routes as an example, the excess per kilogram is calculated at 1.5[%] of the full-price economy class ticket of the direct route. For example, if the full-price air ticket is 3,000 yuan, then an additional 45 yuan will be charged for every kilogram of excess weight. This is still relatively expensive. It is recommended not to be overweight as much as possible. . . . <br/><br/>Don't forget to click "Accept" if it helps!

Not sure what flight you're on? Checked baggage on low-cost airline domestic routes is purchased by yourself. Generally, each passenger in the economy class of a domestic flight has a free checked baggage allowance of 20 kg. If it is exceeded, it is not based on the weight, it should be calculated in units of 20 kg, and it is calculated based on the voyage (800 kilometers is a flight segment). Last time, the plane with a domestic flight of about 2 hours went to hold an exhibition and added an extra piece of luggage and charged about 1/4 of the ticket price, so it was very uneconomical. You can take some luggage and carry it with you to avoid being overweight.

Hello, the fee is charged according to the number of kilograms, and the excess weight × 1.5[%] × full price of the economy class ticket is the fee you need to pay.

It is best not to be overweight, otherwise the airline will kill you. Express can be sent if necessary.