午评：如果今天就这么不死不活地磨叽一天，那明天就必需向上才行了

Group 1 - The market needs to maintain above 3900 for a bullish sentiment, with 3880 as a critical support level and resistance between 3922-3936 [2][4] - The trading volume is crucial; if it does not support upward movement, there may be fluctuations [2] - The daily life line is at approximately 3905, and staying above this level is necessary for a bullish outlook [3] Group 2 - A closing above 3900 is acceptable, while above 3910 is favorable, and above 3920 is strong; at least a close above 3890 is required [4] - The mid to long-term outlook indicates that the key resistance levels are between 3920-4000 for the weekly and 3900-3960 for the monthly [4] - To return to a bull market, the index must stay above the 60-day moving average, and to avoid a bear market, it must remain above the 250-day moving average [4]