(Yicai Global) Dec. 7 -- Stock markets on China's mainland were mostly blasé at midday today after better than expected monthly trade data failed to stir much buying interest.

The Shanghai Composite Index was down 0.66 percent at 3,421.85 at the lunch break, while its Nasdaq-like Star Market Board 50 Index, or Star 50, went against the grain to record a 0.50 percent gain at 1,411.89.

The Shenzhen Component Index was down 0.25 percent at 13,991.87. The ChiNext Price Index, which tracks growth enterprises listed in Shenzhen, dropped 0.14 percent to 2,726.88.

China's trade surplus jumped 103 percent last month from October to USD75.4 billion, thanks to export growth that outstripped projections and a weaker than forecast rise in imports during the month, Customs data show.

Editor: Ben Armour