午间涨跌停股分析：54只涨停股、4只跌停股，智能音箱概念活跃，国光电器涨停

Group 1 - A-shares saw significant market activity with 54 stocks hitting the daily limit up and 4 stocks hitting the limit down on September 22 [1] - The smart speaker concept was notably active, with Guoguang Electric reaching the limit up [1] - The advanced packaging concept strengthened, exemplified by Shanzi Gaoke achieving 6 consecutive limit ups in 7 days [1] - The computing power chip concept experienced an increase, highlighted by Tianpu Co. achieving 14 consecutive limit ups, and Heertai achieving 2 limit ups in 3 days [1] - Among the stocks with consecutive limit ups, *ST Zhengping had 11 limit ups in 14 days, and *ST Yatai had 10 limit ups in 11 days [1] Group 2 - *ST Gaohong faced a continuous decline with 7 consecutive limit downs [2] - *ST Nanzhi and Jinyi Film also experienced declines, each with 2 consecutive limit downs [2]