How to capture the system fairies as wives

"How to become the best in the world?" "The answer is, find more women. It would be best if all of them are rich, all of them have systems, and all of them are your wives. No matter if they are the protagonists, villains, or extras, the more the better." "When you have a large harem, you will be invincible." After closing the secret book, Chen Yin realized that he was already invincible.