Liu Yiqian, the Chinese billionaire, swiped his American Express Centurion card 24 times. Surrounded by the Chinese art world’s most elite collectors, Liu charged $36 million on his credit card to purchase “the holy grail” of Chinese art: a tea cup from the Ming dynasty. The cup, which is more than 500 years old, is only 8 centimeters in diameter and adorned with chickens pecking at their feed. The Meiyintang ‘Chicken Cup’. Credit: Sotheby's It was the summer of 2014, and Liu,