Don King is being smart here, China is an untapped market for boxing. They have tons of money and gained some national pride in the sport since their boxing team had success in the Olympics (by their standards). While it is undoubtedly exploitive to use boxers in this manner, when is a major card not exploitive? Promoters do these things for money. I think that this got very little international exposure because it was geared almost entirely to the Chinese market. Plus after all the big name wars MAB has been in the opponent he was in with was a mere footnote.