I set up three lines, and the market that runs on three lines is assumed to be volatile. In the red circle position, the market broke through the upper track and entered the trend, so I assumed it was a trend. Please note that we use a hypothesis, because the transaction is trial and error, whether a market is volatile or trend, we can't judge in advance. We can only use our own rules to make assumptions. If we are right or wrong, stop loss according to the rules. Once the rules are established, you only need to observe the market from your own perspective. If the market is in line with the shock, you don't trade. Those who meet the trend characteristics can enter the site for trial and error. This is the most scientific method.