Image provided by Sotheby's shows the 1950 painting "Riding in the Autumn Countryside" by Chinese artist Zhang Daqian. Sotheby's said on Monday it has cancelled the sale of the Chinese painting by a ... more 

Image provided by Sotheby's shows the 1950 painting "Riding in the Autumn Countryside" by Chinese artist Zhang Daqian. Sotheby's said on Monday it has cancelled the sale of the Chinese painting by a top-selling artist at its autumn sale in Hong Kong, after its ownership was challenged by a Taiwanese Buddhist nun less