How much is the premium for express delivery?

Price increase fees charged under special circumstances. "Flash delivery" is a one-to-one distribution platform and one-to-one service model for instant delivery industry in the same city. Obviously, the flash delivery personnel only serve one customer at a time from delivery to delivery, with point-to-point delivery. "Flash delivery" premium fee is the increase fee charged by "Flash delivery" under special circumstances. This special situation may include but not limited to bad weather, such as heavy rain and heavy snow. In extreme weather conditions, in order to ensure normal delivery service, "express" charges extra for orders.