Everyone in the base had heard the news of what happened in General Cao's Mansion. This is especially true when Ximen Xueya and his son, Ximen Chino's existence were revealed.
The survivors had already known that this base was made by both the state head and prime minister for their nephew, Ximen Xueya to own. To keep it short this Hope Base is his place and the rest were just allowed to stay here.
Those in the upper circle knew what kind of man Ximen Xueya was. He is cold and indifferent aside from his family. Now that his family includes only Ximen Chino and General Cao, the Government Faction had no other choice but to accept the merging of their faction and the military faction.