Using the grid method to make swing profits, I experienced a day yesterday, which was successful in terms of profits. The bad thing was that when it dropped to 61,600 for the third time, I did not keenly notice the end of the short round, which was a bit taken for granted and needs to be reflected. In addition, I read some articles about mining costs yesterday, which roughly meant that the cost will be around 40,000 after halving. If this callback really goes to the range between 4.2 and 3.8, it will be the best time to go long, because the duration of losses in the entire industry will definitely not be too long.