What Should I Do? I'm an Immortal, Yet Somehow the Demon Cult's Leader

(Immortality-focused, lighthearted and funny, group transmigration) On his hundredth birthday, Yang Cheng, an elderly man, drank too much and died suddenly. After death, he transmigrated to a parallel world, becoming Yang Xiao, the leader of the Sun Moon Holy Cult, and awakening an immortal body! From then on, he would live as long as heaven and earth, and shine alongside the sun and moon. Dongfang Bubai rebelled? Destroy him! Experts from the Six Great Sects surrounded him? Destroy them! Reporting to the leader: Your five wives went down the mountain in the middle of the night to chase their idols. How can this be? I haven't even seen them since I got here! What should I do? Wait at home? Ahem, I'd better go down the mountain and look for them! Righteous warriors of the martial world, tremble! I, the great demon Yang Xiao, am coming!