During the Three Kingdoms period, there was obviously a Yan Kingdom, why not call it the Four Kingdo

1.The regime existed for too short, and after establishing himself as the queen of Yan, it lasted for about a year before being destroyed by Sima Yi.

2.There was no shadow of Yan in the war of the Three Kingdoms of Wei, Shu and Wu.

3.The geographical location of the Yan State is too remote, and it only borders the Wei State.

Because the Yan Kingdom was too small at that time, it was not a level that could be ranked with the Three Kingdoms at all, so the Three Kingdoms ignored the existence of the Yan Kingdom.

Because the main story that happened during the Three Kingdoms period took place between the three countries of Shu, Wu, and Wei, and the main line of history revolved around the three countries, it was called the Three Kingdoms period, and the words of the Yan State were not strong at that time. It's not obscure, so it's not called Shikoku.

Because at that time, the Yan Kingdom was not in the Central Plains, but in the remote north, and the Yan Kingdom did not participate in the struggle between the three countries, so it was only called the Three Kingdoms, not the Four Kingdoms.

I think the main reason is that the ruler of the Yan Kingdom is low-key, and the result of the very short existence of the Yan Kingdom.

Because the Yan State during the Three Kingdoms period was too small compared to the Shu Kingdom, the Wei State and the Wu Kingdom, so the Three Kingdoms period was called the Three Kingdoms instead of the Four Kingdoms.

During the Three Kingdoms period, there was obviously a Yan Kingdom, why not call it the Four Kingdoms but the Three Kingdoms? Rushu: At that time, there was indeed a small Yan country.

But it was not enough to become the main force of the anti-Wei resistance, and was neglected by the author. only describes the fights and killings between Wei, Shu and Wu, so the only thing that future generations know is the Three Kingdoms.

Because the strength of this Yan country is too weak, and it is still in a remote place, it cannot be compared with the other three countries.

This is because the influence of Yan is not large, and it does not have a strong strength, only the strength of Wei Shu and Wu is relatively strong, so it is called the Three Kingdoms.

Yan Guo was too close to the frontier, and he had never had anything to do with the other three kingdoms, and was directly destroyed by Sima Yi, and his sense of existence was too low, so he was not counted.

Because the enemy of the enemy is a friend, in the Three Kingdoms, Wei, Shu and Wu are all opposing parties, only by uniting the Yan State, Sun Quan can have a sense of security, and can he not be destroyed by the Wei State.

Because Yan was able to contain the development of Wei in the north, Sun Quan did this mainly to preserve his own strength, so he had frequent contacts with Yan.

Because Sun Quan has always wanted Yan to attack Wei from behind, and let Wei divide his troops to fight.