If you write someone’s name in Korea, don’t write it in red.
Many of us are aware of this silly superstition, but still many people (especially the elderly) feel uncomfortable seeing names written in red ink.
Names written in red symbolize death and/or bad luck. 
I have heard that giving money as a present is considered thoughtless in some cultures. However in Korea, it considered to be one of the best gifts you can give. This is especially true for weddings and funerals.
At weddings, people will often gift the bride and groom around 50,000 won to 300,000 won before the ceremony starts. You are supposed to bring your gift in an envelope, but many couples will have envelopes avaliable at the enterance to the venue in case you forgot one.
At funerals, it is also common to give the grieving family 50,000 won to 300,000 won. This tradition is supposed to help the family pay for the funeral.
So, don’t be surprised when you see ATM machines outside wedding halls and funeral homes.
The name “Kim” comes in first with 21.5% of South Koreans being named this (this is more than 10 million people). The name “Lee” takes second with 15% and “Park” follows at 8% respectively.
Yuna Kim / Haesoo Kim / Jenny Kim
Speaking of last names, Korean women do not change their family name after they are married.
2. Most Korean Names Consist of Three Syllables.
The family name comes first, while the given name with two syllables comes next.
For example, if a there is a person named, “김민영”, 김 Kim is her family name, and Min-Young is her given name. Minyoung Kim, Min Young Kim, and Kim Minyoung all refer to the same person. There are some people who have only one syllable or three syllables in their name. For example, “김민” [Min Kim] or “김이로운” [Kim E-ro-un]), still, they are pretty rare.
3. Most Korean Names Can Also be Written in Chinese Characters.
Koreans use Chinese characters (aka Hanja), but how we read these characters differ from how people on the mainland read them.
Please don’t assume that someone is married if you see a wedding ring on their ring finger. It is common for single ladies to wear a ring on their ring finger simply as a fashion statement.
Vice versa, don’t assume that someone is single if you don’t see a wedding ring on their ring finger.
Most times, people will buy a wedding ring for their ceremony, but not wear it daily.
Plus, I have noticed that the brand name of the ring is more significant in Korea rather than the size of the gem. People prefer big names like Van Cleef & Arpels, Cartier, Chaumet, Tiffany & Co and many more. This is quite the opposite in the US. 
Many Koreans believe that our dreams help us predict our future.
Good dreams are called 길몽 and bad dreams are called 흉몽.
Some 길몽s (good dreams) include things like pigs and poop. For example, if they appeared in someone’s dream, he or she would buy a lottery ticket. Even dreaming about being murdered is considered a good thing, often meaning a good change is coming.
However, dreaming about losing a tooth (or teeth) is considered to be one of the worst dreams, as it could mean there’s a chance of losing someone in your family.
Meanwhile, there’s also a dream called ‘태몽’. This is a dream that predicts the birth of a baby. Sometimes, what appears in ‘태몽’ helps predict the gender of the baby. For example, if a tiger appears in a dream, people assume that the baby will be a boy. If the dream is about picking fruits or shells on the beach, people assume that a girl will be born.
There are very few garbage cans on the streets of Korea, because citizens are supposed to “pay” for their garbage.
To throw non-recyclable garbage away, we must buy a 종량제봉투 (a plastic bag). The price of the 종량제봉투 differs depending on the size and the region you live in.
The pink seats that are right by the entrance of each subway car are reserved for pregnant women.
Recently, the MBTI personality tests have been so popular in Korea.
So you may often get asked, “what is your MBTI?”
Blood type personality tests were popular a decade ago, even before the MBTI personality test emerged. Back then, people with O blood types were considered to be the most outgoing and extroverted. On the other hand, people with A blood types were considered to be more introverted and quiet.
Big chain supermarkets like Homeplus and Emart must close on the 2nd and the 4th Sunday of each month.
This is because of the government’s project to revive traditional markets and small businesses.
Busan Travel & Living 