Bitcoin has been fluctuating back and forth between 27,000 and the previous high recently. The daily level has hit 28,000 four times this week, and each time it hit the high and fell back, and it did not stand firm once. This shows that the selling pressure near MA120 is relatively strong. When entering the 28,000-28,500 range, long orders should remember to take profits in batches, and do not fight to the end. Those with short positions should not chase the rise.