It's not that the cross star is completely useless, but the cross star, like all other indicators, is sometimes useful and sometimes useless.

Even as far as the current situation is concerned, the daily line will rise after receiving the cross star, but it is anyone's guess whether it will fall after a few days. If it rises for a few days and then falls, is the cross star useful or useless?

The key point is not to confirm whether a certain pattern or price will turn up or down, but to enter the market in a fixed way, what to do after the expected entry, and what to do after the expected entry. After a series of transactions, let's see if the system composed of such a strategy is likely to be profitable for a long time.