In front of Qin Huai'an, Yang Fei directly applied the Six Harmonies Energy-Introducing Needle Technique to himself.
With this formation being implemented, Yang Fei's speed of recovering True Yuan doubled. In less than an hour, he had returned to his peak condition, exuding a dragon-like vitality and a sharp, fierce aura.
Qin Huai'an was secretly astonished.
He could feel that the True Yuan mobilized by Yang Fei while operating the cultivation technique was extremely robust, but the true strength and realm of Yang Fei remained elusive to him.
Especially when Yang Fei ceased operating the cultivation technique, with his strong and keen perception as an Innate Realm powerhouse, he could sense that Yang Fei was a very dangerous person but could not detect any fluctuations of True Yuan in him.
