In terms of noble titles and status, Xie Xuan is merely the head of the Northern Land Inspection and Supervision Department, with an official position equivalent to a junior second grade, without any noble title, just from a bureaucratic family and not considered nobility. He is absolutely not qualified to establish a marital alliance with Prince Pingbian's Mansion.
But now, Prince Pingbian's ambition is vast, and he has already torn his face with the court, so practicality is of utmost importance to him. Not to mention the fifty thousand elite of the Northern Land's Inspection and Supervision Department, even the five thousand martial artists who mastered Qi Blood right before him are a formidable support for him.
Even if all factors are set aside, if Xie Xuan, who has verified the Yang God, could join Prince Pingbian's Mansion, it would definitely be a tremendous boost, providing a Sea Calming Force to the Northern Land.
