South Korea
South Korea is a small country comparing to China.
Korean people are friendly, but seldom can speak English even if in the capital--Seoul.
When you visit this country, u'd better bring some maps both in Korean edition and English edition.
Subway in Seoul is advanced and complex, subway map is very important if u take it often.
If it is possible, u can ask local people guide u before u arrive in there.
I have visited four cities, Seoul, Pusan, Daegu and Gumi.
Pusan is very beautiful because it is a coastal city. Fresh air, bule ocean, cool weater, beautiful there.