The Nine Heavens Tower backs onto the Nine Heavens Dark Web, and behind the Nine Heavens Dark Web stands the Shen Clan.
Although the Qian and Shen families are considered Xia Country's two major Merchants Families.
From the recent contact with Qian Jinming, Su Chengyu has begun to understand that there must be an inseparable relationship between these two families.
One dominates within the country, and the other oversees matters overseas.
No wonder there's hardly any significant conflict over their respective areas of responsibility—perhaps this is the result of an agreement between the two families.
Su Chengyu only sees that there isn't much overt connection between the two families, and the only reason he could think of is due to the Xia Country's official stance.
Xia Country would absolutely not allow a single powerful family to have a real influence that extends over the entire country.