亚太股市，全线重挫

Group 1 - The Asia-Pacific stock markets experienced a significant decline, with the South Korean Composite Index showing a particularly sharp drop, falling over 4% during trading [1][2][3] - Concerns over the high valuations of artificial intelligence and technology-related stocks intensified, leading to a sell-off in tech stocks [1][3] - The South Korean Composite Index opened lower and fell below the key psychological levels of 4000 and 3900 points, with a decline exceeding 100 points at one point [3] Group 2 - In South Korea, major stocks such as SK Hynix and Samsung Electronics faced substantial losses, with SK Hynix dropping over 9% and Samsung Electronics declining more than 5% during trading [3] - The Japanese stock market also saw significant declines, with the Nikkei 225 index dropping over 2% and falling below the 49000-point mark, with a decline exceeding 1000 points [5] - Kioxia, a global leader in storage solutions, experienced a rare drop of over 16% in its stock price [5] - SoftBank Group's stock also faced a sharp decline, with a drop exceeding 10% during trading [6] Group 3 - The A-share market opened lower, with the Shanghai Composite Index falling 0.87% and breaking below the 3900-point mark [7][8] - The Shenzhen Component Index opened down 1.76%, while the ChiNext Index opened down 2.07% [8] - Sectors such as non-ferrous metals, power equipment, telecommunications, and electricity saw the largest declines, while agriculture, food, and beverage sectors remained relatively resilient [9]