Simply looking at the profit ratio cannot comprehensively analyze the advantages and disadvantages of an EA. It also depends on what kind of thinking mode, such as the possible value of the trend band class as long as it is greater than 1, and of course it depends on the specific maximum retracement. If Martin is contrarian, even if the stage backtest is greater than 2 or above, it may bring great risks to the position. Compared with the profit ratio, the maximum retreat and thinking type are more important.