Korea is a beautiful nation in Asia. Korea is the most advanced nation in internet technology and keeps pace with the most significant hi-tech advances on the planet. But, do not make the mistake of thinking this means Korea has let go of its traditions and rules of etiquette which have been long practiced. One of the important rules to be followed is on public transportation. There are seats which are specifically assigned to the elder members of society, and they must never be used by young people.
Never stick your chopsticks in your rice. This is a ritual reserved for funerals and ancestor worship. It is used for honoring the dead ONLY. If you are dining with an older member of society, and you are offered a drink, you must accept as it is a sign of respect and friendship. You may request your preference, water or soda. A refusal indicates you do not accept the offer of friendship. When you accept the drink, you must turn your head or back to your elder when you sip from your glass. It is a sign of deference.
If you are sending a card, note, or letter to a Korean person, you must never write in red ink. This is a superstition with a long history. Red ink was used to mark the information for those whom are deceased, never for the living. When dining in Korea, you must never blow your nose at table. Always excuse yourself. In addition, you must always wait for oldest person at the table to lift their chopsticks before any other person at the table. If you wish to have some water, you must keep in mind at all times that the eldest person at the table must be offered water first, and then everyone else. if you take it only for yourself, it indicates you care only for yourself.
In Korea you must always give and receive with two hands. This means for accepting gifts, giving gifts, and shaking hands, even pouring water. If you are visiting Korea, get in the habits of doing every gesture with two hands. Korean life is centered around the floor, evening dining. Therefore, one should NEVER wear shoes into a Korean home. In line with guarding the manner in which you enter a home, you must also NEVER show the bottom of your feet or shoes. It is proper to keep your feet on the ground when sitting. To turn your shoe or foot at someone is considered a sign of disrespect. For many more tips in Korean etiquette, please visit http://seoulistic.com/korean-culture/20-cultural-mistakes-to-avoid-in-korea/.