How did the Han Dynasty communicate?
In the Eastern Han Dynasty, communication range was broadened. There was the trend of delivery and post to be merged. But in the Wei-Jin period, delivery and post were still managed by two sets of organizations. So were the same in local areas. Due to the frequent wars, delivery on foot couldn’t meet the requirements. Functions of delivery decreased while that of post increased. Therefore, the number of pavilions decreased with increased intervals of pavilions and was getting equivalent to Post. Meanwhile, since the Jin Dynasty, large amount of private delivery appeared, which was one of the reasons for the decreasing of pavilions. Thus, functions of pavilions, delivery and post were unified into post. For example, there were no pavilions along the road in the Northern Zhou period, only post left for providing officials and couriers with accommodations, food and forage for horses.
