A股：盘前出现一个信号，请保持警惕了，周二行情再啰嗦几句

Group 1 - The A50 index is currently experiencing a significant decline, with a drop of nearly 1% as of 4:30 PM, indicating a bearish market sentiment [1] - The daily trend of the A50 index shows a continuation of the downtrend since breaking below the white bullish line on May 23, with resistance from the bullish line persisting [3] - The index is far from the upper bullish line and has shown signs of further weakness, having broken below the green long-term trend line, indicating a fully bearish state on the daily level [3] Group 2 - The weekly trend also reflects a continuation of the downtrend, with the weekly bullish line currently trending downward [5] - A support level is identified around 13,140 points, and if this level is breached, the next support to watch is around 12,950 points [5] - To reverse the current trend, the index needs to reclaim levels above 13,350 points, which appears to be a challenging task given the current bearish conditions on both daily and weekly levels [5]