暴跌！雷军，刷屏！

Group 1 - The core viewpoint of the news is that the Hong Kong stock market, particularly technology stocks, experienced a significant drop on September 26, with Xiaomi Group's stock falling over 8% due to profit-taking by short-term investors after a product launch event [1][2][4] - Xiaomi Group's stock closed at 54.65 HKD per share, with a total trading volume of 23.35 billion HKD on the day of the drop [2] - The company's chairman, Lei Jun, emphasized the importance of self-developed chips for Xiaomi's success, committing to invest at least 50 billion RMB over the next decade [4] Group 2 - Other technology stocks in Hong Kong also declined, with the Hang Seng Technology Index dropping over 3%, and notable declines in companies like Horizon Robotics and Kingsoft [6] - Morgan Stanley expressed optimism about Xiaomi's new flagship smartphone series, predicting that the sales performance could exceed expectations and maintain an "overweight" rating with a target price of 62 HKD [5] - UBS maintained a positive outlook on Chinese stocks, expecting further growth potential in the market, particularly in the technology sector [7]