That is, in view of the current market situation, improvise and place orders in time. Call sheet is a noun, that is, to publicly talk about the plan of making orders, so that investors can make their own positions or simulations according to the tips given by the call sheet, and the call sheet will pass on the information of the price of their positions, stop loss and take profit, etc. to you for your reference.
As for the reliability of shouting, it depends on the strength of the teacher. In fact, I personally think that the teacher's call is on the one hand, and I still have to learn something.
If you want to achieve something in this market, you must have your own trading strategy. It is not advisable to pin all your hopes on others. Still have to learn something by yourself, you can rely on the teacher but not too deep.