"Upper body" means possession. People who have been enlightened, such as buddhas and bodhisattvas, will never get into the upper body, will never make excuses to speak, and it is unnecessary, but they will give you an induction; Some dharma protectors occasionally make excuses to speak, but they don't have to be forever, which requires energy; Often the so-called fox yellow and long white willow are all upper body. The obvious feature is that they pretend to be mysterious, report themselves, and even behave abnormally in the name of Daxian, or there are signs of smoking and drinking ... In this case, there is only one sentence: stay away from me!