$BTC BTC After Bitcoin surged to the upper boundary of 86100 on the 4-hour chart yesterday, there was a pullback. Today, the price quickly surged again. The fluctuations at this stage are normal, as we exchange time for space. There have already been two tests of the middle line today, where support has been found to stop the decline and rebound. For the market to weaken and move downward, the middle line is the first position that needs to be broken. Currently, the continuation of long and short positions is insufficient, and the pattern remains weak in the background. For intraday operations, maintain a high short and low long strategy. At present, we can rely on the upper resistance of 85500-86200, with a target looking down at 83800-82300, touching but not breaking.