Chinese stock markets experienced notable gains over the week ending August 22, 2025, with key indices reaching multi-year highs. The Shanghai Composite Index closed above 3,800 points on August 22, marking its highest level since August 2015 and achieving a fresh decade high. Over the week, the Shanghai Composite rallied 3.5%, its best weekly gain since November 2024. On August 18, the index rose to an intraday high of 3,745.94 points and closed at 3,728.03 points, up 0.85%, with over 4,200 stocks gaining and the total market value of A-share companies surpassing 100 trillion yuan (approximately $13.92 billion) for the first time. The Shenzhen Component Index and ChiNext Index also posted strong performances, with the ChiNext Index surpassing 2,673.3 points, its highest level since January 30, 2023, and gaining 3.36% on August 22. The Beijing Stock Exchange 50 Index rose over 3% to a record high with a trading volume of 33 billion yuan. Technology sectors showed robust momentum, as China's CSI Semiconductor Industry Index increased by 10% and the CSI AI Index rose more than 6%. In Hong Kong, the Hang Seng Index closed up 0.93%, while the Hang Seng Tech Index increased 2.71%, with Tencent shares rising over 2% to HK$606, their highest since March 2021. Overall, the week reflected broad-based gains across major Chinese and Hong Kong stock indices, driven by strong performances in blue-chip and technology stocks.