Zhou Sui immediately unrolled the scroll.
He found it filled with a dense array of mysterious characters, which appeared like earthworms. He could not understand a single word, as it was entirely different from the language of the human realm.
It was as if they were demonic markings.
"So, this is a Demon Clan script."
Zhou Sui's understanding dawned upon him. He sensed information relayed from the Book Worm that identified the scroll's text as hailing from the Demon Clan, hence its stark difference from the human language.
This recognition owed to his acquisition of the Demon Slaying Sect's inheritance.
That inheritance from the Demon Slaying Sect wasn't merely the Judgement of Immortals Sword Art, it also carried abundance information about the Demon Clan and demons, even including knowledge of their written and spoken language.
After all, knowing yourself and your enemy allows you to emerge victoriously from every battle.