$BTC
The end of the trend callback is relatively easy to judge, that is, the trend returns to the original direction, which means the callback is over. You can use indicators, K-line combinations, moving averages, etc. to assist in judgment. I believe you must have your own standards. But I think the key is not how to judge the end of the trend callback, but to judge whether the trend is normal at the end of the callback. Is it a normal adjustment, or has the trend been destroyed? Don't think about copying at the lowest point, selling at the highest point, giving up part of the profit, and waiting for the adjustment to end. If you find that the trend has not been destroyed and it is a normal adjustment, you can continue to make orders in the original direction. If the original trend has been destroyed, you need to re-analyze it.