The number of ancient books and records on the last bookshelf was the smallest compared to the rest of the floor. The value of these experts' notes was as significant as martial skills or cultivation techniques because they represented the past experiences of experts. If a person could comprehend them, then that person could take fewer detours along their cultivation path.
After continuously flipping through a few of the ancient books and records, a book caught Leo's attention.
"Ethereal Iron Sword Tactic? Was not this the experts' notes section? Why would there still be a martial skill here?" Doubt flickered in Leo's eyes.
However, his goal was originally to try and find a sword skill. Now seeing this sword tactic, of course he would not skip over it. Reaching out and picking it up, flipping to the first page, this sword tactic's level immediately leapt into his field of view.
"Ethereal Iron Grade Tactic, upper astral grade martial skill!"
