"The Second Empire established by the Expeditionary Army, and not some Protectorate?" Li Changhe frowned and asked, "Are these guys rebels? Or were they trapped in that world?"
The Great Tang had a rather unsafe piece of black technology, which was the teleportation technology of the Rat-men.
It was precisely because of this technology that the so-called Great Tang Expeditionary Army came into being.
At the beginning, the Great Tang used teleportation gates to counterattack the Rat-men's world, acquiring special materials and extraordinary knowledge from it.
Later, when the Rat-men were completely suppressed, the teleportation gates became the bridges for the Great Tang to access various connected worlds.
It is presumably related to Li Er becoming a divine creature. The Great Tang Expeditionary Army was once very active.
So, some players had encountered the Great Tang Expeditionary Army during their tasks.