BTC: The upward channel has not been opened, and there is still a strong resistance near 71600. At the hourly level, it is trying to gain a firm position at 70,500. Below, you need to pay attention to the 68000 position. This position was the watershed for many long and short battles in the early stage. This week's downward exploration is also around this position. Before the channel is fully opened, you should still operate around this interval and pay attention to the above important nodes.