A股主要指数探底回升，创业板指转涨，盘初一度跌超1%；沪指跌幅收窄至0.07%，深证成指跌幅收窄至0.06%

Core Points - The A-share major indices experienced a rebound after initially dipping, with the ChiNext index turning positive after a drop of over 1% at the beginning of the trading session [1] - The Shanghai Composite Index narrowed its decline to 0.07%, while the Shenzhen Component Index reduced its drop to 0.06% [1] Index Performance Summary - Shanghai Composite Index: 3913.52, down 2.81, -0.07% [2] - ChiNext Index: 3084.45, up 0.73, +0.02% [2] - Shenzhen Component Index: 13068.94, down 8.38, -0.06% [2] - CSI 300 Index: 4600.74, down 7.14, -0.15% [2] - SSE 50 Index: 3003.14, down 4.13, -0.14% [2] - North Securities 50 Index: 1486.65, up 28.22, +1.94% [2] - Science and Technology Index: 1398.95, down 7.36, -0.52% [2]