Alex was not worried about the Nine Great Heaven Seals at all. He can always copy this technique and obtain every bit of information it has to offer.
Obviously, he can break the Nine Great Heaven Seals if he can successfully replicate this technique.
However, there were some things he could not understand.
"Tell me, who sealed the Stone of Immortality here? Why would someone seal a supreme treasure like the Stone of Immortality instead of taking it for themselves?"
[The Stone of Immortality was sealed by the Fourth Stone…]