Li Yao had initially let this matter rest, after all, such a Skill Book requires too much luck, and there isn't any real guide to it.
It is merely a plotline unintentionally triggered through the dialogue between players and NPCs. It barely counts as a task.
But to his surprise, this newly sworn brother knew precisely this kind of clue. Li Yao immediately became alert and said hastily, "Then tell me all about it quickly. This is a great thing to improve our strength."
Young Khan nodded and said, "I know about it naturally. Moreover, as your strength increases, this kind of enhancement becomes increasingly significant. I originally intended to keep this secret for my son, but seeing how devoted my brother is to this skill, I'll share it with you."
Li Yao hesitated for a moment and said, "Oh, I don't know what to say."