Xiaomi official website sent SF Express to the mobile phone, but why is it still like this?

Dear, the logistics information says that it is because of the weather, the road surface may be frozen, or heavy fog and other weather conditions that affect traffic. For the safety of the bag, the departure will be delayed, which will cause some delays anyway. However, these may all be excuses, because the courier only goes to work normally in the eighth day, which may also be the reason.