Qin Mu's heart trembled slightly when he guessed how Dao Master was so sure that he was the human emperor of the current generation.
He had only learned two moves from Village Chief's Sword Picture, and he didn't use them much. Other than executing it in front of Emperor Yanfeng and Imperial Preceptor, he had only used them in front of Pangong Tso and Daozi Lin Xuan.
When Daozi Lin Xuan had followed Dan Yangzi to block the gate of Imperial College, he was defeated under the first move of Sword Picture, Sword Treading Mountains and Rivers.
When he returned back to Dao Sect, he must have shown Qin Mu's Sword Treading Mountains and Rivers. Dao Master must have more or less known that Qin Mu's sword skills came from Village Chief, but he couldn't confirm Qin Mu was the human emperor of the current generation.
As for why he had such a confident tone, he was actually testing the waters.