The working hours of express delivery companies vary due to various factors such as region, off-season and different outlets. Generally speaking, express outlets go to work from 8 am to 9 am and get off work at 8 pm. However, there are also some express outlets that are in transit. Because they have to deal with the express delivery of lower-level outlets, they may work late, even to 12 or so.
In addition, some large express delivery companies, such as SF Express and Shentong, have made it clear that there will be no holiday during the Chinese New Year, but the delivery and arrival time of express delivery may be extended.