The meaning of support levels is roughly like this: when reaching the position, it rebounds, and then when encountering resistance at the pressure level, it falls back. In other intermediate positions, it is just a matter of patiently waiting, not making blind moves, not being anxious or impatient. Enter when it's time to enter, exit when it's time to exit, and do what needs to be done at each position. Trading is actually very simple; just strictly execute your plan. As long as you can execute it strictly, the results won't be too bad.