Most of the Jin Yong main character heroes end up with *one* spouse/permanent love interest. Each of them wins the girl through some combination of the following virtues:
1. Supreme or at least extremely formidable martial arts skill.
2. Valiant character.
3. Good looks.
Most Jin Yong protagonists have at least two of these three qualities, and a few have all three.
Wai Siu Bo had *seven* wives, but he lacked all three of the above virtues (occasionally showed flashes of valiant character, but never as consistently/reliably as the other heroes, and counteracted by many more acts of skullduggery). Yes, he had money and power in abundance, perhaps greater than any of the other heroes, but as is typical of wuxia heroines, Wai Siu Bo's wives (excluding perhaps So Cheun and the Qing princess) didn't really care about such things. These ladies weren't exactly gold-diggers, and were committed to Wai Siu Bo even if he lost all his fortune.
So what was it about Wai Siu Bo that attracted seven women to be his wives, considering his lack of the traditional three attractive virtues of wuxia heroes?