Sorry, I'm an Undercover Monster

Lin Feng, a young boy from the Immortal Clan, was brought back to the Demon Emperor City by Yu Qingtong, the empress of the Demon Clan. Three years later, he returned to the Immortal Clan and went undercover in the Kunlun Sect. Due to his naturally impure body, he became the junior master uncle of the Kunlun Sect. He practiced the "Xuanyuan Five Elements Sword Technique", conquered the ancient immortal weapon Xuanyuan Sword, obtained the Demon Dragon Dragon Pearl, transformed into a demon dragon, and moved towards the position of God Emperor step by step! However, What should I do if I can't hide my undercover identity? Waiting online, it's quite urgent...