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 dropping over 4% during the session [1][2] - Concerns over high valuations of artificial intelligence and technology-related stocks intensified, leading to a sell-off in tech stocks [1][2] - The South Korean stock market saw major declines, with SK Hynix's stock plummeting over 9% and Samsung Electronics falling more than 5% [2] Group 2 - The Japanese stock market also faced a sharp decline, with the Nikkei 225 index dropping over 2% and falling below the 49,000-point mark, with a drop of over 1,000 points [4] - Kioxia's stock experienced a rare decline, dropping over 16%, highlighting volatility in the semiconductor sector [4] - SoftBank Group's stock also saw a significant drop, with intraday losses exceeding 10% [5] Group 3 - The A-share market opened lower, with the Shanghai Composite Index falling 0.87% and breaking below the 3,900-point mark [6] - The Shenzhen Component Index and the ChiNext Index also experienced declines of 1.76% and 2.07%, respectively [6][7] - Sectors such as non-ferrous metals, power equipment, and telecommunications saw the largest declines, while agriculture and food sectors showed relative resilience [8]