According to the rules of the White Emperor clan and the tradition of the Demi-human race, one did not have the right to inherit the throne unless they had cultivated the Imperial clan's technique to its highest level.
No exception had existed over the countless years, and there had never been a demi-human princess able to cultivate the Imperial clan's techniques to the pinnacle.
If there were no princes, the Imperial clan would have to invite a groom. The son-in-law would be inducted as a prince by blood, and once they cultivated the Imperial clan's techniques to the peak, they would become the heir to the imperial throne of the Demi-human race.
Princess Luoluo being married was completely understandable to many demi-human subjects. The true question was who she was being married off to.
Because the man she chose was highly likely to be the next White Emperor.
Xuanyuan Po didn't see it this way.