I dreamed that I was in North Korea, and I had a few friends (actually, they didn't exist). I didn't know whether I was traveling or what I was doing.

the familiar environment makes you feel bored. If you are already quite sure about your work/study, you may wish to consider a higher development direction. Newcomers or new friends are good people to chat with

In dreams, it is the time control of your brain and subconscious mind that controls the dream.