Korean manners
The greater the angle of bending the waist, the slower the speed, the more polite courtesy. So, service industries such as department stores teach people to go down slowly when greeting, stay for about a second, and then come up quickly. It is usually divided into five types depending on the angle. It is divided into mukrye, yakrye, ordinary, formal, and most polite, and generally, Yakrye (15 º)..