A long time ago, there was a continent named "Forgotten River", which means "Forgotten Sichuan Continent".
The mainland is divided into five kingdoms, in order: Feng, Lan, Lin, Jing and Ling. In addition, there is a valley where the five countries are connected. It is named after the continent and is called "Forget River Valley". It is extremely mysterious and makes the five countries fearful.
Not only is the owner of the Valley of Forgotten River mysterious and no one knows his background, but its strength cannot be underestimated. The five countries could not defeat this valley even if they worked together, so the five countries made an agreement with it to protect themselves. From then on, the five countries lived in peace and harmony for hundreds of thousands of years.
After several generations, Wangchuan Valley became more and more secluded from the world, and even disappeared. The emperors of several countries were unable to bear it any longer and wanted to tear up the agreement and invade other countries.
The restraints were gone, and the intrigues naturally began.
The story begins in Feng Kingdom.