March 12 news, according to 4E monitoring, Trump reversed his tariff policy on Canada several times on Tuesday, driving the market to stage a "roller coaster" market. The U.S. stock market rose for a while at the beginning of the session, and then Trump announced a 25% tariff on Canadian steel and aluminum. The three major indexes turned down. Soon after, news came that the policy was suspended and the two sides would renegotiate, but the downward trend of U.S. stocks remained unchanged. The market changed again after noon and Ukraine agreed to a 30-day ceasefire. Large-scale technology stocks have emerged one after another, helping U.S. stocks hit a new daily high, but U.S. stocks weakened again in late trading. As of the close, the three major stock indexes all closed down, with the Dow down 1.14%, the S & P 500 down 0.76%, and the Nasdaq down 0.18%. Most of the seven technology giants rose. The crypto market rebounded significantly, with Bitcoin recovering from a low of US$76,606 to above US$83,000, rebounding more than 8%, recouping yesterday's rapid decline. Ethereum rebounded from a low of $1754 to $1920, a rebound of more than 9%. Some altcoins rebounded even more. The total market value of cryptocurrencies rebounded slightly to US$2.77 trillion, a 24-hour increase of 2.5%, and market sentiment rebounded slightly. The recent uncertainty about Trump's tariff policy has continued to impact the market, and the potential impact on consumers and the economy has suppressed Wall Street sentiment. Tonight's 8:30 CPI report has attracted much attention, and investors are looking forward to judging whether the market's concerns about economic stagnation are reasonable. If the data is higher than expected, the market may experience a sharp fall again.