Somewhere between the jam-packed news conference and the moment, hours later, when the gallons of bulk-quality wine ran dry, China's million-dollar men clustered together for a snapshot: Liu Xiaodong, Fang Lijun, Yue Minjun and the man of this particular hour, Zhang Xiaogang, whose work filled the 22,000 square feet of gallery. Zhang's opening, which inaugurated PaceWildenstein's Beijing gallery, was in September. It sold out.