BTC Daily level: The mid-term demand zone of 87000-90000 has fallen below, and the medium-term trend is mainly bearish, with a clear top structure at the daily level Pay attention to the two key support positions below: 1. Daily gap: 78000-81000 2. High support level before the previous main wave rise: 73000-75000 Upper resistance range: 87500-90500 (this range is difficult to reverse without breaking the mid-term trend)