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As for how to transmit messages to the outside world while wearing Anti-Magic Handcuffs that prevented the use of Awakening Abilities and blocked all contact with the outside,
Fang Ze had anticipated this situation long ago.
That was to use his unique entity, the "Late-Night Investigation Room".
Before, Fang Ze had already verified numerous times that the "Late-Night Investigation Room" did not fall under Awakening Abilities, and Law Prohibition did not affect it.
Otherwise... Fang Ze would have been directly ejected when he touched the Law Prohibition within the "Late-Night Investigation Room". Similarly, individuals wearing Anti-Magic Handcuffs could not be summoned into it.
Therefore... without the need for further trials, Fang Ze knew that the Law Prohibition handcuffs he was wearing would not affect his nightly visit to the Late-Night Investigation Room.