This kind of ordinary parcel (surface mail) is slower, but it is also the cheapest way to send it. (within 20kg, the first weight is 9 yuan /KG, and the second weight is 4 yuan/kg; More than 20 kg continues to weigh 5 yuan)
If you are in a hurry, use Shentong, Dayun and ZTO Express to charge: the first weight 12 yuan/kg; It is reasonable to continue 6 yuan/Jin, and there is speed.
If the charges in remote areas are more expensive; It will be cheaper if you charge in the province.
If you use downwind and postal EMS express delivery, the charge will be more expensive.
FYI