A股三大指数开盘涨跌不一，沪指跌0.07%，创业板指涨0.55%

Core Viewpoint - The A-share market opened with mixed performance on December 5, with the Shanghai Composite Index down by 0.07% and the ChiNext Index up by 0.55% [1] Group 1 - The Shanghai Composite Index experienced a slight decline of 0.07% [1] - The ChiNext Index showed a positive movement, increasing by 0.55% [1]