According to encyclopedic data, Wannu Wang was the legendary king of the Xia royal family in the Middle East, formerly known as Pu Xian Wannu, the Jurchen nationality in the Jin Dynasty, and the founder of Eastern Xia-Pu Xian Wannu and Liaodong Ambassador, who died in October 12 15 in the third year of Emperor Xuanzong of Jin Dynasty, in order to revive the national spirit of the Jurchen nationality.
Whether it exists remains to be verified, but Eastern Xia does exist. History books rarely mention the existence of Jurchen regime like Eastern Xia. As a national entity, it existed for the revival of Jurchen for more than ten years when the Jin Dynasty declined.
You see, the existence of the slave king is a mystery, not to mention the fact that the snake eyebrows communicate with Yu. Although we don't rule out the existence of snake-browed feather, this existence will inevitably involve some historical secrets. How can ordinary people know? It is also possible that there are only fictional objects of the author.