A股早评：沪指重回3900点，创业板指高开超1%，民爆概念股盘初活跃

Group 1 - The A-share market opened with all three major indices rising, with the Shanghai Composite Index up 0.26% at 3900.54 points, the Shenzhen Component Index up 0.65%, and the ChiNext Index up 1.01% [1] - Shanxi Province has abolished the "fireworks ban," leading to increased activity in the civil explosives sector stocks at the market's opening [1] - Stocks related to Hainan, precious metals, and CPO concepts opened high, while some retail stocks experienced adjustments [1]