What does it mean to throw salt at people in Korea?

Salt sprinkling in Korea means salt sprinkling in Korea to drive away evil spirits. From the physical characteristics, salt has excellent adhesion and purification. Koreans believe that salt can suck away bad luck and drive away evil spirits. Many Korean film and television dramas will have such scenes: when you come back from the funeral, you will sprinkle salt on yourself, or someone you don't want to see will go home, and after the other person has left, you will sprinkle salt outside the door, or you will sprinkle salt on uninvited guests. Salt was a precious commodity in ancient times, because it was widely used as a substitute for money as early as the barter period.