Today, the Star 50 index fluctuated throughout the day and closed up 0.03% at 685.76 points. On the market, the medical instruments sector continued to decline. Shanwaishan fell nearly 15%, Haier Biomedical fell more than 6%, Haooubo and Aohua Endoscope fell more than 3%. The biological products sector performed poorly, with Sunshine Guojian Pharmaceutical falling nearly 12%, Zhixiang Jintai and Yifang Biotechnology falling more than 5%, Remegen and Haichuang Pharmaceutical falling more than 3%. The lithium battery sector fell across the board, with Liyuanheng falling more than 6%, Xinyuren falling more than 5%, Boliview and Ronbay New Energy Technology falling more than 4%. The software sector was relatively active, with Huichen Stock rising more than 7%, Jiangsu Eazytec Co., Ltd. rising more than 6%, Shenzhen Fortune Trend Technology and Shanghai Friendess Electronic Technology Corporation rising more than 2%.