To keep the child from being frightened, Grandma White, whose true form was an enormous white snake, always used the illusion she took such pride in.
And in Grandma White's eyes, there was only ever one child: Su Bai.
Whether Su Bai counted as an adolescent or a young adult among humans, and whether his power had grown stronger, he was still a child in Grandma White's eyes. She could never let herself frighten him.
But apart from Grandma White herself, Su Bai and every puzzle piece in the Vengeful Ghost Puzzle knew that her illusion was her weakest ability. Not only was it riddled with flaws, it could only work on one person at a time.
In other words, Grandma White's illusion only worked on Su Bai. Everyone else could see her enormous serpentine body at any time, and even Su Bai could glimpse her true form in the reflections on glass and walls.
Still, this was an old lady's way of showing tenderness. After returning to the puzzle, Grandma White would always boast to the other puzzle pieces about her impressive illusion, and Su Bai and the others were happy to let her enjoy herself.
"It's been a long time since I met such a well-behaved little thing." Grandma White turned her serpentine body and glanced back at the ghostly shadows on the walls and the Strange Creatures hiding in the rooms, too frightened to come out. The white snake in the corridor transformed into a thick beam of white light once more, then gradually dispersed and returned to the Vengeful Ghost Puzzle.
As far as Su Bai could tell, some trait the Green Snake had displayed seemed to have drawn Grandma White's attention. That was why she had emerged from the Vengeful Ghost Puzzle before anyone else,