Hong Kong's Hang Seng Index fell 1.4% to a three-month low, tech index hit two-year low; mainland China's CSI300 dropped 1.1% to August 2025 low amid tech fears and geopolitical tensions. The CSI300 Index closed down 1.1%, while the ChiNext Index dived 3.15% and the tech-focused Star 50 Index slumped nearly 5% to a five-month low. Renewed Sino-US tensions, higher global yields, and a looming earnings season for Chinese tech shares contributed to the declines. The Federal Communications Commission (FCC) also announced it would vote on October 29 to bar all Chinese labs from testing electronic devices for use in the United States.