The Welcoming Coast
From their conversation, Xu Huo learned that the Sair Coast was surrounded by abundant mineral deposits, especially in places that were normally sealed off and only accessible to Players.
The Bo Lun family controlled the coast. To ensure they could buy up enough ore, they sent a large number of Players to the coast every year.
That was why they started making sure Players could reach the Sair Coast safely while they were still on the train. They verified the identities of the Players who boarded—and the verification seemed to be tied to their Abilities. If someone from the Bo Lun family decided not to offer a Player hospitality on the train, then even if that Player changed their appearance after getting off, they couldn't escape the "service refused" label.
Once a Player was marked "service refused," they couldn't take a ship run by the Bo Lun family to a Dungeon location unless they had a ship of their own and knew the route.
There might be Players like that, but they were few and far between.
Players arriving at the Sair Coast could also register the Dungeon they planned to visit at any shop under the Bo Lun family's name. The family could arrange group transport, and while Players waited, they could enjoy lodging and fine food at rock-bottom prices.
Of course, there were conditions: Players had to bring back precious ore from the Dungeon and sell at least a third of it to the Bo Lun family.
In fact, many Players who had visited once came back a second time to earn money selling ore. The prices offered by the Bo Lun family were tempting, and many Players sold them most of their ore. After all, making money this way was easier and less risky