Because of the vast territory of our country, it is very difficult to convey orders and information on such a vast land. Therefore, China has long had a postal system. The appearance of the post station can be traced back to the Western Zhou Dynasty, but the whole post station system was not mature at that time. It was not until Qin Shihuang unified the six countries that an effective and mature post system was initially established, and it was continuously improved and developed in subsequent dynasties. The main functions of ancient post stations were to deliver official documents and military orders, receive envoys and officials, and transport military supplies. It is a multi-link mode of transportation composed of various folk means of transportation.

It can be said that in the long history of ancient China, there are numerous nominal post stations. However, in these stations, there are many important events that affect the trend of China's ancient history.

Xiang Yu, the overlord of the Western Chu Dynasty, was defeated in the Battle of Gaixia, and his last stop in life came to Wujiang Station. Originally, the official of Wujiang Post had already made preparations for crossing the river to Jiangdong, but Xiang Yu felt ashamed to see his elders in Jiangdong, and finally committed suicide in Wujiang Post, staged a sad story of farewell my concubine.

A great event happened in a post called Ma Wei. In 755 AD, An Shi Rebellion broke out. In July of the following year 15, Tang Xuanzong fled to Mawei. The accompanying soldiers executed Prime Minister Yang and forced himself to commit suicide, which is known in history as "Mayi mutiny". The prince used this mutiny to get rid of Yang's brothers and sisters who had been at odds with him and threatened his status as a prince. Xuanzong watched his beloved woman die, but there was nothing he could do. Naturally, this is very painful. This incident also directly led to the separation and independence of Li and his son. This is naturally very unfavorable to the Anshi Rebellion.

In Chen Qiaoyi, a little-known post station, the famous "Chen Qiao mutiny" happened in the Northern Song Dynasty. On the first day of the first month in 960 AD, it was widely rumored that Qidan and Northern Han attacked the Zhou Dynasty. However, Prime Minister Fan Ju didn't tell the truth, so he sent Zhao Kuangyin to command the army to defend the enemy in the north. He went to Chen Qiaoyi, Zhao Kuangyin and Zhao Pu and plotted to launch a mutiny. People put on yellow robes for Zhao Kuangyin and made him emperor. Subsequently, Zhao Kuangyin led the army to Li Kaifeng, and Shi Shouxin, commander of both capital city and Wang Shenqi of Kaicheng, welcomed Zhao Kuangyin into the city, threatening the Zen position of the Duke of Zhou. After Zhao Kuangyin acceded to the throne, he changed his name to "Song" and still made Kaifeng his capital. In the late Zhou Dynasty, he seized power from Chai's orphans and widows, but he also vowed to be kind to Chai's descendants. The Chai family was still given preferential treatment in the Northern Song Dynasty, as can be seen from The Water Margin. Although Feng Xuan Chai Jin Jr. has no official position, he is still highly respected in the local area. Of course, the "Chen Qiao mutiny" also brought bad influence to the Northern Song Dynasty. Since the Northern Song Dynasty began with the mutiny, the rulers were particularly wary of military commanders. Over time, in the Northern Song Dynasty, the status of military commanders began to decline, and the status of civil servants improved, so there was a saying among the people at that time that "a good man does not serve as a soldier, but a good iron does not nail". During the Northern Song Dynasty and the Southern Song Dynasty, although the economy and culture were very prosperous, they were suppressed by the nomadic people in the north everywhere militarily. (Zhou Yang)