The way to activate the timedial is simple.

All it takes is a drop of the activator's blood, plus a secret spell.

However, if the timedial is activated once, it will take five days before it can be activated again.

Not sure about space storage and the like in the 21st ...

"The Return of the Genius Demon Princess" Chapter 896 What is a honeymoon? I am hitting it in my hand, please wait a moment,

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