"Astrology... it encompasses celestial movements, divination, prophecies, and other advanced arcane knowledge... if you really delve into it, it might be beyond your capabilities."
In the small classroom, Su Lu was giving Bai Ling a private lesson.
Despite being a busy principal, he paid close attention to this 'protagonist' and noticed some of Bai Ling's actions.
Perhaps the natives of this world would be blinded by their affection and unwilling to think ill of her, but Su Lu was different. He quickly thought about the possibility that Bai Ling was being manipulated, or perhaps she was on the right path to becoming a protagonist!
Therefore, he used the pretext of tutoring to observe her closely.
It was a great privilege for a student to receive private lessons from a principal, an opportunity that other students could hardly attain.
If Bai Ling weren't Su Lu's niece, I'm afraid jealousy would have consumed her.