Today, the sse science and technology innovation board 50 index plunged in the afternoon, closing down by 4.16% to 969.35 points. There were no obvious hotspots on the market, with only 29 individual stocks rising. The semiconductor sector was in a low mood, with Seq Power plummeting by over 9%, while Huali Microelectronics, Canxin Shares, Shanghai Huajing Microelectronics, and Yandong Microelectronics all fell by more than 8%. Zhenlei Technology and Yuanjie Technology fell by over 7%, and Semiconductor Manufacturing International Corporation dropped by over 5%. Some stocks in the robot concept sector rose, with Jiangsu Beiren Smart Manufacturing Technology and Efftec both up by over 7%. In terms of individual performance, Longyan Zhuoyue New Energy's 20CM in the chemicals sector hit the daily limit up.