According to 4E monitoring, affected by weak economic data and Trump's tariff policy, US stocks fell last week, and the three major indices closed down collectively. The Dow fell by 2.37%; the S & P 500 fell by about 3.1%, the worst single-week performance since September last year. The Nasdaq fell by 3.41%, falling for three consecutive weeks, falling more than 10% from its recent high and falling into a correction range. Large technology stocks performed poorly, Nvidia's market value shrank by $1 trillion from its historical high, and Tesla's correction from its historical peak exceeded 46%. The decline in the crypto market intensified. The Bitcoin strategic reserve signed by Trump was less than expected, and the content of the White House crypto summit was mostly polite remarks, which did not surprise the market and exacerbated the market decline. Bitcoin lost a number of key support levels one after another, and the lowest fell to the $80,000 mark. The decline expanded by nearly 12% in the past 7 days, and the deadline was $82,150. Other mainstream currencies such as Ethereum fell even more sharply, and market sentiment fell into a trough. Trump's tariff policy is capricious, and last week's non-farm payroll data failed to provide a clear economic outlook. Markets are growing tired of uncertainty and risk assets continue to be under pressure. This week, investors are focusing on US CPI and PPI inflation data, which will directly affect the Federal Reserve's interest rate decision on March 18-19.