Song Shuhang recalled what he'd experienced in Senior White's illusory reality.
The young man in green robes riding the white horse would look for the mysterious 'Little White' to guide the latter's practice every day. His life's joy seemed to be Little White.
However, the 'Little White' in that plot appeared rather unfortunate. He would be forced to practice by the other party every time...
One day, the young man in green robes could no longer bear it and spoke his mind, saying the cursed "Little White, when your hair reaches your waist..." line.
In addition, in Senior White's illusory reality, the young man in green robes somewhat resembled the current Senior White.
Because of this, up until now, Song Shuhang had been unable to determine whether Senior White was Little White or the young man in green robes.
Song Shuhang was very curious about this, but he couldn't bring himself to ask Senior White the question directly.