Bitcoin's trend today basically matches expectations — volatility has narrowed, oscillating repeatedly within the 91500-90000 range, while Ethereum is trapped in the narrow 3130-3100 range. The short trading idea provided this morning still offered opportunities for traders who followed up in time.

The current rebound is clearly losing momentum. Bitcoin encountered resistance at 91600, and Ethereum is also stuck at the 3150 level, failing to break through smoothly. From a technical chart perspective, this rebound is essentially just a weak correction within a downtrend. On the 4-hour K-line, the Bollinger Bands have already turned downward, and after price broke below the lower band, a small positive line has appeared for a retest, but moving averages and various indicators remain in weak condition, giving us opportunities to short repeatedly.

This evening, attention needs to be paid to non-farm payroll data, jobless claims data, and announcements related to US tariffs, as these news may cause volatility in the market. Afternoon price action is expected to continue oscillating within the narrow range before news release. Currently, the coin price is maintaining above the Bollinger middle band. If it further tests the upper band resistance at 91500 and achieves an effective breakthrough, it may open up space to the upside toward 93000; if the breakthrough fails, a downside pullback is within expectations. Short-term strategy remains a high-short approach, with focus on observing the validity of upper band resistance.