RAPAPORT... Sotheby's has appointed Wenhao Yu as deputy chairman ofjewelry for Asia, to help strengthen its expertise and sourcing capabilitiesand expand its business in the region. Yu was previously at Poly Auction Hong Kong, where he founded and headed its jewels and prestige collection department.Prior to that role, he cofounded the jewels and watches department at PolyAuction Beijing. "Our jewelry team will benefit immensely from [Yu's]extensive business connections, profound industry experience, as well as hisoutstanding track record," Kevin Ching, CEO of Sotheby's Asia, said Monday. Image: Wenhao Yu. (Sotheby's)