Some people got confused when i talked about korean age so i thought i should write about it a bit.
There are many vids on you.tube that explain you how korean age works but they made very confused too, in fact i already knew it.
I dicussed the topic with my korean friends too, but they were not sure why they count their ages as they do.
current year - birth year + 1 = your korean age
The easiest way is just to add 1 year to you age, so i'm 21 therefore in korea i am 22. But it's confusing before the Chinese New Year (as you call it) couse it gives one plus, so am 23 in Korea when in reality i am only 21. Lol