Chinese collectors gather for the autumn sale of China Guardian Auctions Co., in Hong Kong Sunday, Oct. 7, 2012. Chinese and international auction houses are encroaching on each other's territory in Hong Kong and Beijing for the first time this autumn sale season as they step up the battle for the Asian art market. (AP Photo/Vincent Yu)

Associated Press
Chinese collectors gather for the autumn sale of China Guardian Auctions Co., in Hong Kong Sunday, Oct. 7, 2012. Chinese and international auction houses are encroaching on each other's territory in Hong Kong and Beijing for the first time this autumn sale season as they step up the battle for the Asian art market. (AP Photo/Vincent Yu)
Chinese collectors gather for the autumn sale of China Guardian Auctions Co., in Hong Kong Sunday, Oct. 7, 2012. Chinese and international auction houses are encroaching on each other's territory in Hong Kong and Beijing for the first time this autumn sale season as they step up the battle for the Asian art market. (AP Photo/Vincent Yu)
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