"What?"
Jian Wushuang steadied himself and looked at the silver-haired elder who had made a sudden appearance in front of him.
Jian Wushuang possessed the strength of an Imperial Kinsmen Ancient God at the peak of the Three-star level, strong enough to suppress even Xia Tao with his Ninth-heaven Sword Formation. Yet, this old man's snort alone had sent his formation flying. What kind of strength was that?
"Jian Wushuang, be careful! This person ought to be a Rank Four Dao Master." Gu King's voice resounded inside him.
"Rank Four Dao Master?" Jian Wushuang was stunned. "There are only three ranks for Dao Master, aren't there?"
"There are four of them, but those in Rank Four are so much stronger than those in Rank Three that no one actually refers to them as such. People call them... the Celestial Masters!" Gu King said.
"Celestial Master?" Jian Wushuang was surprised.