The Qinghe Group was located in the heartland of the Central Plains. But unlike other consortiums that often controlled several to over a dozen strongholds, the Qinghe Group had only ever controlled one. Based on its sequence number in the Alliance of Strongholds, that should be Stronghold 66.
But over the years, the people from the Qinghe Group did not care that it was called Stronghold 66 and simply referred to it as Luoyang City.
Over time, other people also began to call that stronghold Luoyang City.
It was unique just like Fortress 178.
Before the Alliance of Strongholds was established, the Qinghe Group had already shown they had a strong side. They had a fixed and stable organizational structure, and many technologies that had been preserved from the Pre-Cataclysm times. Of course, they did not manage to preserve all of them.