|“You four have merely scratched the surface of your full potential.”|
- This book exists in real life as LEGO Ninjago: The Book of Spinjitzu.
- At some points in his life, he stopped writing in it for years, but resumed after Garmadon's banishment and while training the Ninja.
- When he was young, Wu wrote the secrets he learned from the Scroll of Forbidden Spinjitzu, but when he was older and wiser, he placed a seal over it so no one would ever see it.
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