I, the Prince of the Underworld, Convince People with Virtue in the World

(Urban fantasy, lighthearted and funny, online IQ) As the prince of the underworld, I persuade others with virtue in the world. Qin Jing was originally the prince of the underworld, and he lived an ordinary life in the underworld all day long, showing no shame, dominating, being surrounded by beautiful maids, bullying men and dominating women. Day after day, he was fed up with this boring life, and by chance he got a system that could come to the human world. I thought I could enjoy all the wonderful things in the world, but I didn't expect that the system showed that I only have three days to live. If I don't accumulate merit, my soul will be gone when the time is up, and I won't even be able to return to the hell! Not only that, he also discovered that this world is not as safe as imagined. Since the mysterious barrier on the other side of the ocean was opened five years ago, mysterious organizations from various countries have already set off countless bloody battles under the seemingly calm surface... What to do? He can only be a "good person" and "convince others with virtue"!