In Shangguan Yunxiao's opinion, the letter he sent to North profound heavens was the first step to show his goodwill to the great Empress, donghuang Ziyou. It could even be said that he was trying to join the great Empress.
This time, he had gone to the North Mystic heaven to meet donghuang Ziyou in person. This was a true surrender. He had brought the entire boundless heaven to the Empress to express his allegiance.
Shangguan Yunxiao had his own reasons for doing so.
First, almost five years ago, donghuang Ziyou ascended to the throne of North profound heavens as a daughter. At that time, she was criticized and doubted by the people of the world. However, she broke the rumors and quickly stabilized the situation of North profound heavens with her amazing talent and ability, shocking the world. This was enough to prove that she had the temperament of a wise ruler of the ages.