Make them believe that once they leave Baihu City, they will turn into ordinary people and will also be cursed by Tiger Lord, eventually dying in a foreign land.
Now, it surely can't be that they slap their own faces and tell the disciples that all this was just concocted by their ancestors to deceive them, right?
But if they do not leave this place, how can they find the strange iron?
A lie that has been maintained for hundreds to thousands of years cannot be changed overnight.
Therefore, most of those classic books have been archived.
Apart from the High Priest, only the Chief Steward can view them to a limited extent with the High Priest's approval.
Over the past century, the High Priest has also been trying to minimize the impact of this.
However, the legend is longstanding and changing it is not something that can be achieved overnight.
This could easily lead to the collapse of the faith of the White Tiger Clan descendants, causing them to fall apart.