Wang Tao was seeing the "Changhe Awakening School" for the first time; he had never even heard of it before. The paper didn't provide much information either, simply stating—this is a school aimed at training Awakeners.
There were many vacant positions, or rather, most positions were unfilled. Wang Tao's eyes lit up when he saw the principal position at the very top, so he immediately chose it.
Wang Tao did not have much free time and couldn't commit to a position that required long work hours. In his view, the principal obviously didn't need to teach, and many tasks could be delegated to others, making it relatively less demanding.
Of course, that wasn't the most important point—Wang Tao could have easily declined the position, as there was no need to burden himself with extra tasks, and Gu Yun couldn't have said much about it.
But crucially, Wang Tao felt this position was very suitable for himself—because he could identify who had Hidden Attributes.