Left-handed Immortality: Left in, Right Out, Demons Transformed Into Treasures

[Unorthodox Path][No Female Lead][Xianxia Rare Treasures] I may be a time traveler, and before traveling through time, I may have been a descendant of immortals and gods. He was born with supernatural powers, but his talent was just average. Therefore, I decided to hunt down the demons. Because of this, I lost an eye and an ear. A heretic saved me and took me in as his disciple. Later, he died...died with the morality in his heart. Before I died, I asked, "Is it okay not to save people?" He smiled helplessly: "I don't want to either." After saying this, he transformed into a corpse demon. In the end, I escaped using a life-saving magic weapon. Before leaving, I opened the mouth in my palm and swallowed him. This is my magic, swallowing monsters with my left hand and transforming treasures with my right hand. I named them Zuo Zuo and You You.