On Monday, due to mixed signals from US economic data and concerns about the economic situation in the US, the US dollar index continued to decline and fell below the 107 mark, ultimately closing down 0.94% at 106.54. The yield of US Treasury bonds continues to decline, with the benchmark 10-year yield continuing to decline, reaching 4.159%; The two-year US Treasury yield, which is more sensitive to monetary policy, fell below the 4% mark and closed at 3.958%. US President Trump announced on Monday (March 3) that the 25% tariffs imposed on Mexico and Canada will officially take effect on Tuesday, and the planned equivalent tariffs will also be implemented on April 2. This measure has not only made financial markets uneasy, but also sparked widespread global attention to the new economic barriers in North America. Due to OPEC+confirming production increases in April, the two oil companies fell more than 2% on Monday, hitting a new low in nearly half a year. WTI crude oil continued to decline during the US trading session and plunged to $67 in the late trading session, ultimately closing down 2.16% at $68.23 per barrel; Brent crude oil closed down 2.16% at $71.39 per barrel.