I want to send a courier in Lanzhou, which courier is better; If it is cheap and does not take time, the cheapest is ordinary parcel post (ordinary mail). . .

But surface mail is slower and the cheapest express delivery.

If you want to hurry, you can express it to Lanzhou (outside the province) by Shentong and Dayun. The charge is not expensive. The first weight is 15 yuan/kg. It's also reasonable to continue 8 yuan kg. Its speed is also very fast, second only to SF.

If it is a provincial express delivery, it is cheaper.

If you use SF Express or postal EMS, the charge will be more expensive.

FYI