How is slow motion formed?

In essence, slow motion, like fast motion, is a technical method to change the real motion form. Slow motion in TV is usually done on the stunt stage, while movies use upgraded (slow motion) or degraded (fast motion) photography. Under such special effects, the action on the screen can be slowed down or accelerated at will, thus producing special viewing effects and affecting people's psychological feelings, especially slow motion, which has become a common performance skill in film and television art because of its direct charm in expressing rhythm and emotion. Tracing back to the source, the fundamental function of slow motion is to prolong the actual exercise process. The instantaneous change is delayed and amplified, so the main action is particularly emphasized. So slow motion is considered as "close-up in time". This time, "enlargement" combined with narrative foreshadowing created a profound artistic conception.