Determining the pressure level and support level has always been one of the difficulties of the band, especially the short band.
Many times, the banker will be very bad, and some retail investors will have a unified consciousness, and they will often be one or two points or even a few tenths of a point away from the key pressure level.
Therefore, we must use the pressure level more flexibly. We can wait patiently in a one-sided market, but holding on in a volatile market often means losing.
