Security guard stands next to paintings by Chinese artist Zhang at Sotheby's auction preview of The Mei...
A security guard stands next to paintings titled "Lotus and Mandarin Duck" (L) and "Children Playing under a Pomegranate Tree", both by Chinese artist Zhang Daqian, on display at Sotheby's auction preview of The Mei Yun Tang Collection in Hong Kong April 20, 2011. The paintings are each expected to fetch $1.9-2.6 million by the auction house. REUTERS/Tyrone Siu (CHINA - Tags: SOCIETY)