Even though it was just a few fleeting moments, only Fang Lin understood the peril involved.
If it weren't for Fang Lin having memories of his former life, intimately familiar with everything about the Pill Saint Palace, and coincidentally knowing the structure of the array in the Book Collection Tower, he wouldn't have been able to infiltrate the second floor so easily.
Even now, on the second floor, Fang Lin remained vigilant, completely concealing his aura. With the pills he had prepared beforehand, after consuming them, he became even harder to detect.
The reason for going to such great lengths to enter the second floor of this Book Collection Tower was that Fang Lin wanted to find any ancient books related to Mountain Tu and Mo Shouhe.