The US president earlier emphasized at a White House press conference that the comprehensive tariffs on imports from Canada and Mexico will take effect as scheduled after a one-month suspension period, causing a risk-averse sentiment in the market. At the same time, due to the continued decline in Nasdaq futures technology stocks and the expectation of interest rate hikes by the Bank of Japan, which has led to a strengthening of the yen and raised concerns about risk aversion, Bitcoin has once again started a new round of declines this morning around 6 am, and at around 8 am it once fell to around $90,850, a new low since January 13. Ethereum also plunged, with the quoted price at the time of writing being $87,812, a drop of nearly 3.84% in the last 24 hours. First, according to the Bollinger Bands indicator on the 4H chart of Bitcoin, the market is currently showing a clear bearish trend, with the middle line of the Bollinger Bands continuing to decline, reflecting the overall trend of the market. Recently, the price has not only broken through the lower band of the Bollinger Bands, but has also moved downward at an extremely fast speed, indicating that the downward pressure on the market is quite large. At the same time, the contraction of the Bollinger Bands suggests that market volatility may increase. As the price continues to explore the lower levels, the volatility may further intensify. Secondly, according to the KDJ indicator on the 4H chart of Bitcoin, the K-line value and the D-line value are both in the oversold area, indicating that the market is currently at a relatively low price level. Notably, the K-line value is crossing upward through the D-line value, suggesting that the market may see a rebound signal in the short term. In addition, although the J-line is in the negative value area, indicating that the downward pressure on the market is still large, the golden cross formation of the KDJ indicator provides a short-term rebound opportunity. This signal may indicate that the market is about to see a short-term price rebound. Finally, according to the MACD indicator on the 4H chart of Bitcoin, the DIF line and the DEA line are both running below the 0 axis and continue to show a divergent downward trend, indicating that the bearish trend is still dominating the market. At the same time, the green histogram of MACD is growing continuously, further confirming the downward trend of the market. Unless there is a significant reversal signal, it is not recommended to blindly chase the long position for the time being. In summary, Bitcoin is currently showing a clear bearish trend, with the Bollinger Bands and MACD indicators both showing strong downward momentum. Although the KDJ is showing a rebound signal in the oversold area, the market is more likely to maintain a bearish trend in the short term. In conclusion, the advice given by the expert is that when Bitcoin rebounds to the $89,000-$89,300 level, it is recommended to short with a target of $87,000 and a defense level of $90,000.