Relying on support levels to take long positions.Bitcoin / US DollarCOINBASE:BTCUSDDylanGoldmanFour Core Supports for the Bulls: 1.Key Support Zone Proven in Practice: 87200 is close to the strong intraday support at 87000, and 86500 below is a recent high-volume trading support zone. Since December, multiple dips into this range have resulted in quick rebounds, indicating strong buying support. The current price is close to the bulls' cost zone, limiting downside potential. 2.Technical Rebound Structure Forming: The 4-hour chart shows the price holding above the MA5 and MA10 moving averages, with the moving averages forming a golden cross and diverging upwards. The MACD shows an initial golden cross below the zero line with decreasing volume. A bottom divergence structure is confirmed on the 15-minute chart, indicating strong short-term technical rebound demand and upward momentum. 3.Macro Liquidity Support Remains Unchanged: The Fed's interest rate cut cycle is clear, year-end asset rebalancing is generating passive buying, the short-term weakening of the US dollar supports risk assets, and the impact of Japan's interest rate hike has been gradually absorbed. Systemic selling pressure in the market has been fully released. 4.On-Chain Selling Pressure Continues to Weaken: Net outflows of Bitcoin from exchanges are marginally improving, short-term holders' selling intentions are decreasing, and whales are accumulating in batches in the 84000-85000 range, with no risk of concentrated selling, laying a solid foundation for a bullish rebound. Bitcoin trading strategy buy：86000-87000 tp:88000-89000-92000