Children in elementary school always like to do a strange movement: squat with their legs down, stretch their arms forward, and do "saw-of-war" shaking with high frequency. For elementary school children, this is a social language that they call "electric shake" This unsightly and impolite gesture is particularly popular among children, and has become another phenomenal behavior among elementary school students after "The Lonely Brave" Some teachers find that as soon as they turn around, there areElementary school students doing "electric shaking" movements behind their backs.