A post station is a place where people or officials who passed court documents and military information boarded the bus and changed horses on the way in ancient times. China is one of the first countries in the world to establish institutions to transmit information. Although the postal service has a history of more than 3,000 years, there are not many sites and cultural relics left behind. The two post stations on the stamp belong to the Ming Dynasty. Mengcheng Post Station is a water horse post station, outside the south gate of Gaoyou Ancient City in Jiangsu Province. Jimingshan Inn in Huailai, Hebei Province is the only postal city in China.

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Logistics has been accompanied by human history since ancient times, and when it comes to ancient logistics, it is inevitable to mention the post office. To put it simply, the post station is a place where ancient officials who send and receive official documents and visiting officials rest and change horses on the way. Later, its function gradually expanded and was finally replaced by new things. The text post station appeared in Liaoning in the Tang Dynasty. The Five Classics written by Song people mentioned that the post station was located on Yingzhou Road in the Tang Dynasty: "Because of eastbound 180 Li (now Chaoyang City), it was sent to Yan Juncheng (now Yixian County), about 500 Li from Yan Juncheng to the east, passing through Ruluo Shouzhuo (now Beizhen Town), crossing the 17 th post of Liaohe River to Anduhu (now Liaoyang City)." Although there is no specific station name mentioned here, we can know that the post office in the Tang Dynasty has been set up in Liaodong. During the Liao Dynasty, there were 14 post offices between Dadingfu in Beijing and Liaoyang in Tokyo. During the Jin Dynasty, a post station was set up between Huining House in Shangjing and Yanjing along the coastal highway in western Liaoning. In order to meet military needs and strengthen exchanges, Jin followed the example of the Song Dynasty in Liaoning. Delivery shops are generally built near major traffic routes, with garrisons, like a small square fortress with black flags at four corners. The distance between shops is generally about ten miles, and there are four people in each department. The management is very strict and has the nature of the army. At this time, the delivery shop and post office are under the leadership of the Ministry of War. The post station provides accommodation, chariots and horses for past officials in accordance with the standards set by the imperial court.

Due to the vast territory and developed transportation, the post station system was strengthened in the Yuan Dynasty, which also became an important means to consolidate its political power. At this time, the post station is also called "station red", and the actual "station red" is a transliteration of Mongolian post station.

In the Ming Dynasty, except for the post station from Shenyang to Lushun, other trunk lines were set up with post stations. This is different from setting up post stations on only two trunk lines in the Yuan Dynasty. In the Ming Dynasty, a delivery station was set up. These independent stations specialize in the transportation of goods. Their main task is to prepay the country's military supplies, tributes and gifts. Managed by the local health center. In the first year of Hongwu (A.D. 1376), the delivery office was established, which was a great progress in transportation in Ming Dynasty, and made freight transportation have a special organization. Land transportation in Ming Dynasty was basically fixed-point relay. Therefore, in addition to the task of specifying transportation routes in the station, the delivery office should also do a good job in the distribution of sea and river transportation.

After the emperor shunzhi entered the customs in Qing Dynasty, he established his capital in Beijing, calling Shengjing the former capital as the resident capital. Shengjing still has a very special position in the whole country. Shengjing Post Station is also different from other provinces. The post office is divided into three parts: post office, station and shop. The post station is a transportation organization for the government to receive guests and arrange official materials. The station is an institution that transmits important documents and military information, and is dedicated to military systems. Shops are led by local ministries, state and county governments and are responsible for delivering official documents and letters. Shengjing Post Station was basically set up in the Ming Dynasty, which was not limited by administrative divisions, depending on traffic conditions. Delivery is used to deliver official documents. All official documents between states and counties are delivered by express delivery. Shengjing is all over the region.

The certificate used by the post station is the sign of the merger fire. Cars, horses and porters who need to transport official documents and articles to the post station must look at the "postal sign" and the government will use it according to the rules; When the Ministry of War uses it, it depends on the fire card. There are very strict regulations on the use of postal symbols. Send troops to protect those who have specific tasks during transportation. When delivering official documents, the Ministry of War will get angry, so if the delivery of each post station along the way arrives in Beijing from the outside or is delivered to the other party from the outside, a list must be filled out. Official documents are limited to "flying immediately" and need to travel 300 miles every day. The urgent official document is marked with the words 400 Li, 500 Li or 600 Li and delivered within the specified time limit. But don't fill in this word. By the Qing dynasty, the management of the post station had been perfect and extremely strict. Anyone who breaks the rules will be punished. At the end of the Qing Dynasty, the post office was abolished because of the establishment of the newspaper office, and then the post office was abolished. At the same time, the newspaper specialized in its affairs, and later established the postal service, and the newspaper was gradually cancelled.

Post stations played an important role in the ancient transportation in China. Under the primitive means of communication, the post station undertakes various political, economic, cultural, military and other information transmission tasks. To a certain extent, it is also a part of logistics information, and it is a specific network transmission and network transportation. Although China ancient post stations had different forms and names in different dynasties, they were well-organized, with distinct grades and complete procedures. The feudal monarch relied on these radio stations to maintain information collection, instruction release and feedback, thus achieving the purpose of feudal rule control. Due to the limitation of historical conditions at that time, the level of scientific and technological development was limited, and its speed and quantity could not be compared with today's, but the coverage level of traffic information system, in terms of its strict organization, was no less than that of modern communication traffic. It can be said that the achievements at that time were also part of the foundation of our modern civilization. Is there a similar beauty between the post station and today's postal system, service area of expressway, cargo transfer station and logistics center?

From the historical development of Shenyang, it started from an ancient post station and gradually evolved into a contemporary metropolis. We can't forget the history of more than 1000 years. Our bodies and bodies are marked by the ancients everywhere. We should be good at discovering and excavating the excellent heritage of ancient times, inherit civilization, foster strengths and avoid weaknesses, and work harder to carry forward fine history, open up a new century and win new progress with Japan.