Oil painting Stranger by Wang Yidong is on display during the media preview of Christie's Shanghai 2014 spring auction in Beijing, April 18, 2014. The preview will go to Shanghai on April 24, and the auction will be held there on April 26. Offering over 60 well-selected pieces, the auction is estimated to realize in excess of 93 million yuan (US$15 million). Works by artists such as Zao Wou-Ki, Liu Wei, Andy Warhol, Pablo Picasso and Bernard Buffet are among the highlights. [Photo by Bi Nan/chinadaily.com.cn]