The speed of domestic surface mail was slow, and it usually took days or even weeks to receive the package. This was because the surface mail package needed to be transported on the ground through the mail box, and the mail box would be affected by many factors during the transportation process, such as transportation routes, traffic congestion, etc. These factors would affect the delivery speed of the mail. In addition, the domestic surface mail processing method was relatively primitive and usually did not use advanced information technology and transportation management systems, which also led to the slow delivery speed of mail. In order to speed up the delivery of mail, you can choose to use express delivery services such as Shunfeng, Yuantong, Yunde and other express delivery companies. These express delivery companies use advanced transportation management systems and information technology to better ensure the speed and accuracy of mail delivery.