Starting with Trait Extraction, I Fuse All Beasts

Wei Guangzheng transmigrated to a world where people cultivated by using the body parts and tissues of mythical creatures from the Classic of Mountains and Seas. He became a human-beast fusion test subject. Fortunately, he awakened a golden finger panel that gave him good-and-evil missions. When other people fused beast hide, they could only use one kind and dared to use just a single piece. They also had to worry about becoming beastlike and turning into monsters. When Wei Guangzheng fused beast hide, he could use as much as he wanted, upgrade without risk, stay human, and freely choose its traits. A Guanguan in his left hand, a Fei in his right. The left tells you to turn over a new leaf; the right says you’d better be good. Everyone thought he was just a kindhearted man with good luck, but he was already scheming darkly about how to complete their good-and-evil missions. Until his kindred spirit teased him: “You should be called Wei Guangzheng, the Fake Guangzheng!” Since you’ve found out, I can’t let you live. A flash of blade light swept past... Four limbs, four kinds of beast hide; five organs, five kinds of beast tissue. The villains want to dissect him for research? The mythical beasts want to devour him and evolve? Wei Guangzheng opened the panel and smirked: “Come on, let’s see how many rounds of good-and-evil rewards you’re worth.” Years later, Wei Guangzheng sighed, unbothered by the boos all around him: “Being a good person is hard.”