The Black Cat's meaning was somewhat vague.
The others were baffled, but Zheng Qing immediately understood what it wanted to convey. Without the charm gun to draw away the leaking aura of the forbidden curse, more and more magic power accumulated without release, causing his eyes to bleed.
So he needed a new outlet.
Which was the Law book mentioned by the Black Cat.
It was the Law book that Zheng Qing customized with a copper coin at the Shangyuan Bookstore when he first came into contact with the Wizard World—recently, one night, the young wizard sleepwalked and filled that Law book with spells.
Later, Mister told him that the spell he recorded in the Law book that night was a guiding spell, a spell that could trigger a forbidden curse. In other words, that spell was considered the 'trigger' of the forbidden curse on Zheng Qing.
