12.17 Bitcoin BTC Strategy: During the day, it moves in a range and is weaker than I expected. In the evening, still watch the 872-873 resistance level. If it remains under pressure, you can follow up with short positions; conversely, if the trend is strong and stabilizes above 873, you can follow up with long positions, or wait until around 890 to consider short positions. Wait for the Japanese interest rate hike data; there should be more big moves in the coming days.