On October 17, 2025, Shenzhen Kaifa Technology Limited (stock code: 000021) plummeted to its daily limit, marking a steep decline of 9.99%. The stock closed at 27.40 yuan, with trading volume reaching a substantial 5.682 billion yuan and a turnover rate of 12.87%. Post-market data from the list of most actively traded securities revealed that the special trading seat under the Shenzhen-Hong Kong Stock Connect purchased stocks worth 242 million yuan while offloading stocks valued at 293 million yuan. Meanwhile, one institutional special seat registered a net purchase of 47.451 million yuan, whereas three other institutional special seats reported a net sale totaling 171 million yuan. Additionally, the stock has experienced a drop exceeding 5% on two occasions within the past five trading days. Over the preceding 10 trading sessions, there has been a cumulative net outflow of 1.781 billion yuan in principal funds. Despite this, the stock price has climbed cumulatively by 9.56%, the financing balance has seen a cumulative increase of 504 million yuan, and the volume of securities available for short selling has decreased by a cumulative total of 30,900 shares.