Bitcoin faces resistance after challenging the 90,000 mark, with a correction underway, trading narrowly around 89,000 during the day. In the early hours, external news shocks caused a rapid decline, with the price dropping nearly 3,000 points.

From a 4-hour perspective, the market has broken below the lower Bollinger Band, with the 86,000 area forming a clear structural support. Regarding indicators, the KDJ is showing a turning point and convergence at low levels, indicating a technical rebound need; the MACD remains below the zero line, with bearish momentum not fully exhausted. Intraday trading should focus on the 86,000 support zone; if it stabilizes, consider entering multiple long positions gradually; if it effectively breaks below this level, wait for further market confirmation before following up.

Suggestions are to go long around 86,000 and 86,500, with an initial target of 88,200, and aim for 90,000 if broken.