Find a good machine and rent a plane for delivery, so slow.

Large demand, logistics bottleneck and other reasons.

1. If many consumers place orders at the same time or buy during a specific promotion, this may lead to higher requirements for courier companies and merchants, thus prolonging the delivery time.

2. There may be logistics bottlenecks in some areas, such as bad weather, road traffic congestion, vehicle failure, etc., which leads to prolonged transportation time.