A true teaching can be conveyed in a single sentence, while false teachings may fill thousands of books.
For them, perhaps what stood between them and ascending to the status of a True Immortal was but one opportunity, merely needing someone to guide them. However, that opportunity was exceedingly rare, and the guidance they sought was not something they could uncover by pouring over countless texts.
Thus, if they could seize a chance in this trial, without aspiring to be the ultimate victor, just hoping to gain some insight into breaking through to become a True Immortal, it would be considered an extraordinary stroke of luck for them.