Yantun Valley

Yantun Valley was neither a part of Xin nor the part of the countries that were a neighboring country of Xin. 

It was a valley amidst the mountains…the area that never any Empire tried to win over. 

The reason was simple. 

In Yantun valley lived a group of five physicians…physicians who could cure any kind of disease. 

That was what everyone say about Yantun valley's physicians. 

There was also a saying that those physicians could bring a dead person to life. 

However, it depended on their will who they wanted to treat. The last person that Yantun valley had accepted to treat from the outside world was almost a century ago. 

After that, many rich people had gone their with their loved ones who they wanted to get treated, however, those physicians never accepted those people. 

When anyone tried to use the force, they were killed mercilessly. Many people of course had never come back from Yantun valley.