China stocks decline, Hong Kong shares extend losses on Sino-US tensions

China stocks fell from a decade high, while Hong Kong shares extended losses due to escalating Sino-US tensions and profit-taking. The CSI300 Index dropped 1.3% and the Shanghai Composite 0.5%. Hong Kong's Hang Seng Index declined 1.1%, marking its fifth consecutive losing day. These movements follow China's expansion of rare earths export controls and U.S. calls for chipmaking equipment export bans, impacting sentiment.