same in Japan,weird...

In Korean they have specific speaking styles for different ages. If I am talking to someone older I have to speak in polite manners (jeondaemal), whereas if I am talking to a friend I am able to speak in informal manners (banmal). So in order to avoid any misunderstanding and disrespect it is very important to first ask about the age, so one can be sure about what speech to use. Furthermore, you also speak to people with "Oppa", "Eonni", "Hyung", "Noona" etc. which for all you need to know the age of the person you are talking to. Blood type is like the horoscope signs in the western world. So in Asia it is common to base someone's personality on their bloodtypes. There are some typical characteristics for each blood type, so it's like asking someone in the western world, which sign they are. Hope you found it helpful.

In Korean they have specific speaking styles for different ages. If I am talking to someone older I have to speak in polite manners (jeondaemal), whereas if I am talking to a friend I am able to speak in informal manners (banmal). So in order to avoid any misunderstanding and disrespect it is very important to first ask about the age, so one can be sure about what speech to use. Furthermore, you also speak to people with "Oppa", "Eonni", "Hyung", "Noona" etc. which for all you need to know the age of the person you are talking to. Blood type is like the horoscope signs in the western world. So in Asia it is common to base someone's personality on their bloodtypes. There are some typical characteristics for each blood type, so it's like asking someone in the western world, which sign they are. Hope you found it helpful.