Billionaire earns first-class travel for life by putting Modigliani nude on Amex

Liu Yiqian and his family can now fly free all over the world after he used his credit card, which earns points, to buy a $107m painting A Chinese billionaire will never have to pay for a plane ticket again, after he accrued a staggering number of air miles using his American Express card to buy a $107m painting. Liu Yiqian Liu was the winning bidder for Amedeo Modigliani's Reclining Nude at a Christie's auction house earlier in November.