Heaven City, the holy land in the hearts of the people of Black Tortoise Country, ultimately dominating the fate of the entire country. As governors of Heaven City, the Xia family was equivalent to spiritual deities to everyone else.
It is said that the Master of the Xia Family has reached the level of a Martial Emperor. In fact, anyone who has attained the level of a Martial General would be considered as a powerful cultivator in all four countries. Once reaching the rank of Martial King, the person could receive vassals and be considered as a marquis, regardless of his or her gender. So you can imagine the level of prestige a Martial Emperor would receive in the eyes of the world.
