Game of Thrones: Wind Rises in the Riverlands

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The geography of the Riverlands is divided into two parts, the Sancha River region and the Blackwater River region. The ruling center of the Blackwater River region is Harrenhal, which can control a vast area from the middle of the Sancha River to the mouth of the Blackwater River. However, due to the existence of the Royal Territory and King's Landing, the Blackwater River region was split, and the scope of Harrenhal's rule was greatly reduced. The ruling center of Sanchahe is in Huangshi City, which is connected to Twin River City to the north and River Run City to the south. All the famous nobles in the river area are nearby. It can effectively integrate and rule the Sancha River area, and can reach Harroway directly along the river. So the King of Rivers and Mountains rules in Wildstone City, while Hall controls a wider area, so Harrenhal was chosen.