In the internet information society, people imagine ancient times.
People would kill or commit crimes randomly and just run away afterward. Tang Song had his own phantom thief Kid.
In reality,
traveling long distances required obtaining verification from local officials. Without such verification, one was immediately regarded as a criminal vagrant. If caught at a checkpoint or by patrol officers, one could be beaten and forced to kneel and enslaved.
The situation was always worse than imagined, never better.
Not to mention in a country like Aran where the Magic Energy Industry was well-developed, there was the Crystal Energy Card with anti-forgery features, intricate internal circuit designs, and its own set of identity card systems.
But ultimately, it was a society governed by personal connections.
And someone like Liszt, who traveled around Aran, needed a strong backing.