港元兑美元汇率一度跌至7.8494，为2023年5月以来的最低水平。

Core Viewpoint - The Hong Kong dollar (HKD) has depreciated to 7.8494 against the US dollar, marking the lowest level since May 2023 [1] Group 1 - The HKD exchange rate has reached a significant low, indicating potential economic implications for Hong Kong [1]