元旦假期，全球市场的涨跌情况是？

Group 1 - The trend of de-dollarization continues, impacting global markets and leading to a mixed performance in precious metals [1] - The Hong Kong stock market opened slightly higher, marking a "New Year’s Day" gain [1] - Oil prices are declining due to oversupply expectations [1] Group 2 - The Chinese yuan shows strong support, returning to the "6" range against the dollar [1] - Key commodities and indices experienced notable price changes from December 31 to January 3, with sweet gold rising by 9.76% and the Hang Seng Index increasing by 2.76% [1] - The offshore yuan depreciated slightly by 0.20% [2]