(Reuters) - Global auction house Sotheby's kicked off its spring sales in Hong Kong by selling all lots in a two-day wine sale, outstripping expectations, but the picture was less clear for its Asian and Chinese art sales as buyers became more selective. The five-day sale by Sotheby's of wine, jewellery, Asian and Chinese art, ceramics and watches, held from March 31 to April 4, is closely watched as a barometer of emerging market demand from Asian and Chinese buyers in 2012.