深地经济概念，大爆发

Market Overview - The A-share market experienced a rebound today, with the ChiNext Index rising over 3% and the Shanghai Composite Index increasing by 1.36%, returning to the 3900-point level [1][3] - The total trading volume in the Shanghai and Shenzhen markets reached 1.87 trillion yuan, an increase of 136.3 billion yuan compared to the previous trading day [1][5] Sector Performance - The sectors that performed well included cultivated diamonds, engineering machinery, and CPO, while coal stocks showed weakness [2] - Notable stocks included ShenKong Co. and Petrochemical Machinery, both achieving two consecutive limit-ups, and Yuanjie Technology hitting a historical high with a 20% limit-up [1][2] Stock Movement - By the end of trading, the Shanghai Composite Index was at 3916.33, the ChiNext Index at 3083.72, and the Shenzhen Component Index at 13077.32, with respective increases of 90.26, 52.44, and 264.11 points [4] - A total of 4628 stocks rose, while 729 stocks declined, with 92 stocks hitting the daily limit-up and 81 stocks hitting the limit-down [5]