Group 1 - The A-share consumer stocks experienced a significant decline, particularly in the dairy sector, with companies like Beiyinmei and Maiqu'er hitting the daily limit down, indicating a strong sell-off [1] - Despite the overall market downturn, consumer stocks had previously shown a notable upward trend, with Beiyinmei's stock price increasing over 70% recently, approaching a five-year high [2] - The collective drop in dairy stocks is attributed to a correction effect after substantial gains, as well as a pre-earnings exit of funds, highlighting concerns over the performance of many companies in the sector [3] Group 2 - There are no specific negative factors identified for the dairy industry that would explain the sudden drop, suggesting that the decline may be more related to market dynamics rather than fundamental issues [4]