Ai Weiwei ( 1957 - ) is a Chinese contemporary painter. Ai Weiwei s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 9120.72 USD for Tiananmen Fuck Off 1998 in 2004 to a remarkable record 1464385.2 USD for UNTITLED (DIVINA PROPORTIONE) in 2014 , based on the size and medium of the artwork.