Below is some useful link

www.yahoo.com
www.ebay.com
painting.about.com
www.art.com
www.google.com
www.slide.com
www.eshiok.com
www.widgets.com
www.maeght.com/galeries/
www.artrealization.com
arts.tom.com
www.artron.net
www.ionly.com.cn
www.artnet.com.cn
www.8sheng.com
www.artvalue.com.cn
www.kanart.net
www.ucca.org.cn
www.artvip.net
www.zhuokearts.com
www.boubo.com
www.thebeijinger.com
www.cityweekend.com.cn
www.artbj.com
www.boyie.com
www.artintern.net
www.dszg.com
www.21nowart.com
www.cl2000.com
www.99ys.com
www.artzinechina.com