港股收盘：恒生科技指数跌0.9%，中核国际大涨21%

Market Performance - The Hang Seng Index closed down by 0.54%, while the Hang Seng Tech Index fell by 0.90% [1] - Notable stock movements included BYD down 3.95%, Xiaomi down 1.43%, and JD down 1.82% [1] - Conversely, SMIC rose by 1.39%, and China National Nuclear Corporation increased by 21.30% [1] Hang Seng Tech Index Details - The Hang Seng Tech Index reached a high of 6665.56 and a low of 6561.09, with a trading volume of 796 million [2] - The index experienced a fluctuation of 1.56% and a total turnover of 44.495 billion [2] - Moving averages for the index are as follows: MA5 at 6458.15, MA10 at 6371.25, MA20 at 6174.49, and MA30 at 6018.36 [2]