午间涨跌停股分析：31只涨停股、24只跌停股，商业零售概念走强，汇嘉时代4天2板

Core Viewpoint - The A-share market showed significant activity with 31 stocks hitting the daily limit up and 24 stocks hitting the limit down, indicating a volatile trading environment on September 4th [1] Group 1: Stock Performance - The pre-made food sector was notably active, with stocks like Bubugao and Lingnan Holdings reaching the daily limit up [1] - The commercial retail sector also strengthened, highlighted by Huijia Times achieving two limit ups in four days, and Eurasia Group achieving two consecutive limit ups [1] - Stocks with consecutive limit ups included Changjiang Materials with four limit ups in eight days, Jimin Health with four limit ups in seven days, and China Ruilin with three limit ups in four days [1] Group 2: Declining Stocks - *ST Gaohong faced a continuous decline with 19 consecutive limit downs, while *ST Wanfa and *ST Yatai experienced two consecutive limit downs [1] - Other stocks such as *ST Baoying and Zhaoxin Shares also faced limit downs [1]