Successor Of The Gods
And that old man is Xue Yaoshan, known as Old Marquis Xue.
The royal ranks are divided into several levels. From Baron, Viscount, Count, Marquis to Duke. They divide their ranks according to their domain, like Old Marquis Xue who owns a border town and a few others.
The eldest son of Xue Yaoshan, who was the father of Xian Xian, also worked to guard the border town. He was the strongest of Xue Yaoshan's children and rumor had it he was to be the next Marquis Xue.