Not only did the country establish the mail delivery system at that time, but also the familiar bonfire system. At that time, many scholars went to various countries to lobby for education, which was also a way for people to send information at that time.
In ancient times, the means of transportation were still very simple, and it took a certain amount of time and energy for ordinary poor people to get out and meet their relatives. People with a little economic foundation may keep some mules, cows and horses, but most of them will be used to transport goods, and some dignitaries will ride horses.
However, if you have something urgent to contact a distant relative, you can handle it by expediting, which is what we often hear. In ancient times, an ordinary breed of horse could run 20 kilometers an hour if it was healthy, and 50 kilometers an hour if it was a blood horse from the western regions.
However, because of the limited physical strength, you need to rest and eat after running for a period of time to have the strength to continue running, but eating will also delay the time, so there were special stations in ancient times.
According to historical records, there was a post station more than 3000 years ago. There are many horses in the post station, both ordinary and swift horses. Every post station has people on duty 24 hours a day, just to prevent urgent letters from being delivered on time.
In ancient times, there were people who specially delivered documents. They are responsible for delivering documents to the government and people. These people work hard all day and travel long distances, and their lives are in danger at any time. In addition, some ancient peoples also used sound to convey information.